Check in LLVM r95781.

80 files changed, 4826 insertions, 0 deletions

diff --git a/test/Transforms/SimplifyCFG/2002-05-05-EmptyBlockMerge.ll b/test/Transforms/SimplifyCFG/2002-05-05-EmptyBlockMerge.ll
new file mode 100644
index 0000000..414235b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2002-05-05-EmptyBlockMerge.ll
@@ -0,0 +1,22 @@
+; Basic block #2 should not be merged into BB #3!
+;
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   grep {br label}
+;
+
+declare void @foo()
+
+define void @cprop_test12(i32* %data) {
+bb0:
+	%reg108 = load i32* %data		; <i32> [#uses=2]
+	%cond218 = icmp ne i32 %reg108, 5		; <i1> [#uses=1]
+	br i1 %cond218, label %bb3, label %bb2
+bb2:		; preds = %bb0
+	call void @foo( )
+	br label %bb3
+bb3:		; preds = %bb2, %bb0
+	%reg117 = phi i32 [ 110, %bb2 ], [ %reg108, %bb0 ]		; <i32> [#uses=1]
+	store i32 %reg117, i32* %data
+	ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/2002-05-21-PHIElimination.ll b/test/Transforms/SimplifyCFG/2002-05-21-PHIElimination.ll
new file mode 100644
index 0000000..055386b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2002-05-21-PHIElimination.ll
@@ -0,0 +1,19 @@
+; CFG Simplification is making a loop dead, then changing the add into:
+;
+;   %V1 = add int %V1, 1
+;
+; Which is not valid SSA
+;
+; RUN: opt < %s -simplifycfg | llvm-dis
+
+define void @test() {
+; <label>:0
+	br i1 true, label %end, label %Loop
+Loop:		; preds = %Loop, %0
+	%V = phi i32 [ 0, %0 ], [ %V1, %Loop ]		; <i32> [#uses=1]
+	%V1 = add i32 %V, 1		; <i32> [#uses=1]
+	br label %Loop
+end:		; preds = %0
+	ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/2002-06-24-PHINode.ll b/test/Transforms/SimplifyCFG/2002-06-24-PHINode.ll
new file mode 100644
index 0000000..88f32bc
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2002-06-24-PHINode.ll
@@ -0,0 +1,14 @@
+; -simplifycfg is not folding blocks if there is a PHI node involved.  This 
+; should be fixed eventually
+
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i32 @main(i32 %argc) {
+; <label>:0
+	br label %InlinedFunctionReturnNode
+InlinedFunctionReturnNode:		; preds = %0
+	%X = phi i32 [ 7, %0 ]		; <i32> [#uses=1]
+	%Y = add i32 %X, %argc		; <i32> [#uses=1]
+	ret i32 %Y
+}
+
diff --git a/test/Transforms/SimplifyCFG/2002-09-24-PHIAssertion.ll b/test/Transforms/SimplifyCFG/2002-09-24-PHIAssertion.ll
new file mode 100644
index 0000000..9a12062
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2002-09-24-PHIAssertion.ll
@@ -0,0 +1,13 @@
+; RUN: opt < %s -simplifycfg
+
+define i32 @test(i32 %A, i32 %B, i1 %cond) {
+J:
+	%C = add i32 %A, 12		; <i32> [#uses=3]
+	br i1 %cond, label %L, label %L
+L:		; preds = %J, %J
+	%Q = phi i32 [ %C, %J ], [ %C, %J ]		; <i32> [#uses=1]
+	%D = add i32 %C, %B		; <i32> [#uses=1]
+	%E = add i32 %Q, %D		; <i32> [#uses=1]
+	ret i32 %E
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-03-07-DominateProblem.ll b/test/Transforms/SimplifyCFG/2003-03-07-DominateProblem.ll
new file mode 100644
index 0000000..8762046
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-03-07-DominateProblem.ll
@@ -0,0 +1,17 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define void @test(i32* %ldo, i1 %c, i1 %d) {
+bb9:
+	br i1 %c, label %bb11, label %bb10
+bb10:		; preds = %bb9
+	br label %bb11
+bb11:		; preds = %bb10, %bb9
+	%reg330 = phi i32* [ null, %bb10 ], [ %ldo, %bb9 ]		; <i32*> [#uses=1]
+	br label %bb20
+bb20:		; preds = %bb20, %bb11
+	store i32* %reg330, i32** null
+	br i1 %d, label %bb20, label %done
+done:		; preds = %bb20
+	ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-05-InvokeCrash.ll b/test/Transforms/SimplifyCFG/2003-08-05-InvokeCrash.ll
new file mode 100644
index 0000000..c019931
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-05-InvokeCrash.ll
@@ -0,0 +1,13 @@
+; Do not remove the invoke!
+;
+; RUN: opt < %s -simplifycfg -disable-output
+
+define i32 @test() {
+	%A = invoke i32 @test( )
+			to label %Ret unwind label %Ret2		; <i32> [#uses=1]
+Ret:		; preds = %0
+	ret i32 %A
+Ret2:		; preds = %0
+	ret i32 undef
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-05-MishandleInvoke.ll b/test/Transforms/SimplifyCFG/2003-08-05-MishandleInvoke.ll
new file mode 100644
index 0000000..15cd773
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-05-MishandleInvoke.ll
@@ -0,0 +1,12 @@
+; Do not remove the invoke!
+;
+; RUN: opt < %s -simplifycfg -S | grep invoke
+
+define i32 @test() {
+	invoke i32 @test( )
+			to label %Ret unwind label %Ret		; <i32>:1 [#uses=0]
+Ret:		; preds = %0, %0
+	%A = add i32 0, 1		; <i32> [#uses=1]
+	ret i32 %A
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-17-BranchFold.ll b/test/Transforms/SimplifyCFG/2003-08-17-BranchFold.ll
new file mode 100644
index 0000000..8ac9ae4
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-17-BranchFold.ll
@@ -0,0 +1,22 @@
+; This test checks to make sure that 'br X, Dest, Dest' is folded into 
+; 'br Dest'
+
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep {br i1 %c2}
+
+declare void @noop()
+
+define i32 @test(i1 %c1, i1 %c2) {
+	call void @noop( )
+	br i1 %c1, label %A, label %Y
+A:		; preds = %0
+	call void @noop( )
+	br i1 %c2, label %X, label %X
+X:		; preds = %Y, %A, %A
+	call void @noop( )
+	ret i32 0
+Y:		; preds = %0
+	call void @noop( )
+	br label %X
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-17-BranchFoldOrdering.ll b/test/Transforms/SimplifyCFG/2003-08-17-BranchFoldOrdering.ll
new file mode 100644
index 0000000..888e187
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-17-BranchFoldOrdering.ll
@@ -0,0 +1,26 @@
+; This test checks to make sure that 'br X, Dest, Dest' is folded into 
+; 'br Dest'.  This can only happen after the 'Z' block is eliminated.  This is
+; due to the fact that the SimplifyCFG function does not use 
+; the ConstantFoldTerminator function.
+
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep {br i1 %c2}
+
+declare void @noop()
+
+define i32 @test(i1 %c1, i1 %c2) {
+	call void @noop( )
+	br i1 %c1, label %A, label %Y
+A:		; preds = %0
+	call void @noop( )
+	br i1 %c2, label %Z, label %X
+Z:		; preds = %A
+	br label %X
+X:		; preds = %Y, %Z, %A
+	call void @noop( )
+	ret i32 0
+Y:		; preds = %0
+	call void @noop( )
+	br label %X
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch-dbg.ll b/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch-dbg.ll
new file mode 100644
index 0000000..af59ba0
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch-dbg.ll
@@ -0,0 +1,58 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep switch
+
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+; Test folding all to same dest
+define i32 @test3(i1 %C) {
+        br i1 %C, label %Start, label %TheDest
+Start:          ; preds = %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        switch i32 3, label %TheDest [
+                 i32 0, label %TheDest
+                 i32 1, label %TheDest
+                 i32 2, label %TheDest
+                 i32 5, label %TheDest
+        ]
+TheDest:                ; preds = %Start, %Start, %Start, %Start, %Start, %0
+        ret i32 1234
+}
+
+; Test folding switch -> branch
+define i32 @test4(i32 %C) {
+        switch i32 %C, label %L1 [
+                 i32 0, label %L2
+        ]
+L1:             ; preds = %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        ret i32 0
+L2:             ; preds = %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        ret i32 1
+}
+
+; Can fold into a cond branch!
+define i32 @test5(i32 %C) {
+        switch i32 %C, label %L1 [
+                 i32 0, label %L2
+                 i32 123, label %L1
+        ]
+L1:             ; preds = %0, %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        ret i32 0
+L2:             ; preds = %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        ret i32 1
+}
+
diff --git a/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll b/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll
new file mode 100644
index 0000000..93f851c
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll
@@ -0,0 +1,80 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep switch
+
+; Test normal folding
+define i32 @test1() {
+        switch i32 5, label %Default [
+                 i32 0, label %Foo
+                 i32 1, label %Bar
+                 i32 2, label %Baz
+                 i32 5, label %TheDest
+        ]
+Default:                ; preds = %0
+        ret i32 -1
+Foo:            ; preds = %0
+        ret i32 -2
+Bar:            ; preds = %0
+        ret i32 -3
+Baz:            ; preds = %0
+        ret i32 -4
+TheDest:                ; preds = %0
+        ret i32 1234
+}
+
+; Test folding to default dest
+define i32 @test2() {
+        switch i32 3, label %Default [
+                 i32 0, label %Foo
+                 i32 1, label %Bar
+                 i32 2, label %Baz
+                 i32 5, label %TheDest
+        ]
+Default:                ; preds = %0
+        ret i32 1234
+Foo:            ; preds = %0
+        ret i32 -2
+Bar:            ; preds = %0
+        ret i32 -5
+Baz:            ; preds = %0
+        ret i32 -6
+TheDest:                ; preds = %0
+        ret i32 -8
+}
+
+; Test folding all to same dest
+define i32 @test3(i1 %C) {
+        br i1 %C, label %Start, label %TheDest
+Start:          ; preds = %0
+        switch i32 3, label %TheDest [
+                 i32 0, label %TheDest
+                 i32 1, label %TheDest
+                 i32 2, label %TheDest
+                 i32 5, label %TheDest
+        ]
+TheDest:                ; preds = %Start, %Start, %Start, %Start, %Start, %0
+        ret i32 1234
+}
+
+; Test folding switch -> branch
+define i32 @test4(i32 %C) {
+        switch i32 %C, label %L1 [
+                 i32 0, label %L2
+        ]
+L1:             ; preds = %0
+        ret i32 0
+L2:             ; preds = %0
+        ret i32 1
+}
+
+; Can fold into a cond branch!
+define i32 @test5(i32 %C) {
+        switch i32 %C, label %L1 [
+                 i32 0, label %L2
+                 i32 123, label %L1
+        ]
+L1:             ; preds = %0, %0
+        ret i32 0
+L2:             ; preds = %0
+        ret i32 1
+}
+
diff --git a/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll b/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll
new file mode 100644
index 0000000..fafe73b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll
@@ -0,0 +1,40 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define void @symhash_add() {
+entry:
+	br i1 undef, label %then.0, label %UnifiedReturnBlock
+then.0:		; preds = %entry
+	br i1 undef, label %loopentry.2, label %loopentry.1.preheader
+loopentry.1.preheader:		; preds = %then.0
+	br label %loopentry.1.outer
+loopentry.1.outer:		; preds = %loopexit.1, %loopentry.1.preheader
+	br label %loopentry.1
+loopentry.1:		; preds = %endif.1, %then.4, %then.3, %then.1, %loopentry.1.outer
+	br i1 undef, label %loopexit.1, label %no_exit.1
+no_exit.1:		; preds = %loopentry.1
+	br i1 undef, label %then.1, label %else.0
+then.1:		; preds = %no_exit.1
+	br label %loopentry.1
+else.0:		; preds = %no_exit.1
+	br i1 undef, label %then.2, label %else.1
+then.2:		; preds = %else.0
+	br i1 undef, label %then.3, label %endif.1
+then.3:		; preds = %then.2
+	br label %loopentry.1
+else.1:		; preds = %else.0
+	br i1 undef, label %endif.1, label %then.4
+then.4:		; preds = %else.1
+	br label %loopentry.1
+endif.1:		; preds = %else.1, %then.2
+	br label %loopentry.1
+loopexit.1:		; preds = %loopentry.1
+	br i1 undef, label %loopentry.1.outer, label %loopentry.2
+loopentry.2:		; preds = %no_exit.2, %loopexit.1, %then.0
+	br i1 undef, label %loopexit.2, label %no_exit.2
+no_exit.2:		; preds = %loopentry.2
+	br label %loopentry.2
+loopexit.2:		; preds = %loopentry.2
+	ret void
+UnifiedReturnBlock:		; preds = %entry
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/2005-06-16-PHICrash.ll b/test/Transforms/SimplifyCFG/2005-06-16-PHICrash.ll
new file mode 100644
index 0000000..90be680
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2005-06-16-PHICrash.ll
@@ -0,0 +1,95 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; PR584
+@g_38098584 = external global i32		; <i32*> [#uses=1]
+@g_60187400 = external global i32		; <i32*> [#uses=1]
+@g_59182229 = external global i32		; <i32*> [#uses=2]
+
+define i32 @_Z13func_26556482h(i8 %l_88173906) {
+entry:
+	%tmp.1 = bitcast i8 %l_88173906 to i8		; <i8> [#uses=2]
+	%tmp.3 = icmp eq i8 %l_88173906, 0		; <i1> [#uses=1]
+	br i1 %tmp.3, label %else.0, label %then.0
+then.0:		; preds = %entry
+	%tmp.5 = icmp eq i8 %l_88173906, 0		; <i1> [#uses=1]
+	br i1 %tmp.5, label %else.1, label %then.1
+then.1:		; preds = %then.0
+	br label %return
+else.1:		; preds = %then.0
+	br label %loopentry.0
+loopentry.0:		; preds = %no_exit.0, %else.1
+	%i.0.1 = phi i32 [ 0, %else.1 ], [ %inc.0, %no_exit.0 ]		; <i32> [#uses=2]
+	%tmp.9 = icmp sgt i32 %i.0.1, 99		; <i1> [#uses=1]
+	br i1 %tmp.9, label %endif.0, label %no_exit.0
+no_exit.0:		; preds = %loopentry.0
+	%inc.0 = add i32 %i.0.1, 1		; <i32> [#uses=1]
+	br label %loopentry.0
+else.0:		; preds = %entry
+	%tmp.12 = sext i8 %tmp.1 to i32		; <i32> [#uses=1]
+	br label %return
+endif.0:		; preds = %loopentry.0
+	%tmp.14 = sext i8 %tmp.1 to i32		; <i32> [#uses=1]
+	%tmp.16 = zext i8 %l_88173906 to i32		; <i32> [#uses=1]
+	%tmp.17 = icmp sgt i32 %tmp.14, %tmp.16		; <i1> [#uses=1]
+	%tmp.19 = load i32* @g_59182229		; <i32> [#uses=2]
+	br i1 %tmp.17, label %cond_true, label %cond_false
+cond_true:		; preds = %endif.0
+	%tmp.20 = icmp ne i32 %tmp.19, 1		; <i1> [#uses=1]
+	br label %cond_continue
+cond_false:		; preds = %endif.0
+	%tmp.22 = icmp ne i32 %tmp.19, 0		; <i1> [#uses=1]
+	br label %cond_continue
+cond_continue:		; preds = %cond_false, %cond_true
+	%mem_tmp.0 = phi i1 [ %tmp.20, %cond_true ], [ %tmp.22, %cond_false ]		; <i1> [#uses=1]
+	br i1 %mem_tmp.0, label %then.2, label %else.2
+then.2:		; preds = %cond_continue
+	%tmp.25 = zext i8 %l_88173906 to i32		; <i32> [#uses=1]
+	br label %return
+else.2:		; preds = %cond_continue
+	br label %loopentry.1
+loopentry.1:		; preds = %endif.3, %else.2
+	%i.1.1 = phi i32 [ 0, %else.2 ], [ %inc.3, %endif.3 ]		; <i32> [#uses=2]
+	%i.3.2 = phi i32 [ undef, %else.2 ], [ %i.3.0, %endif.3 ]		; <i32> [#uses=2]
+	%l_88173906_addr.1 = phi i8 [ %l_88173906, %else.2 ], [ %l_88173906_addr.0, %endif.3 ]		; <i8> [#uses=3]
+	%tmp.29 = icmp sgt i32 %i.1.1, 99		; <i1> [#uses=1]
+	br i1 %tmp.29, label %endif.2, label %no_exit.1
+no_exit.1:		; preds = %loopentry.1
+	%tmp.30 = load i32* @g_38098584		; <i32> [#uses=1]
+	%tmp.31 = icmp eq i32 %tmp.30, 0		; <i1> [#uses=1]
+	br i1 %tmp.31, label %else.3, label %then.3
+then.3:		; preds = %no_exit.1
+	br label %endif.3
+else.3:		; preds = %no_exit.1
+	br i1 false, label %else.4, label %then.4
+then.4:		; preds = %else.3
+	br label %endif.3
+else.4:		; preds = %else.3
+	br i1 false, label %else.5, label %then.5
+then.5:		; preds = %else.4
+	store i32 -1004318825, i32* @g_59182229
+	br label %return
+else.5:		; preds = %else.4
+	br label %loopentry.3
+loopentry.3:		; preds = %then.7, %else.5
+	%i.3.3 = phi i32 [ 0, %else.5 ], [ %inc.2, %then.7 ]		; <i32> [#uses=3]
+	%tmp.55 = icmp sgt i32 %i.3.3, 99		; <i1> [#uses=1]
+	br i1 %tmp.55, label %endif.3, label %no_exit.3
+no_exit.3:		; preds = %loopentry.3
+	%tmp.57 = icmp eq i8 %l_88173906_addr.1, 0		; <i1> [#uses=1]
+	br i1 %tmp.57, label %else.7, label %then.7
+then.7:		; preds = %no_exit.3
+	store i32 16239, i32* @g_60187400
+	%inc.2 = add i32 %i.3.3, 1		; <i32> [#uses=1]
+	br label %loopentry.3
+else.7:		; preds = %no_exit.3
+	br label %return
+endif.3:		; preds = %loopentry.3, %then.4, %then.3
+	%i.3.0 = phi i32 [ %i.3.2, %then.3 ], [ %i.3.2, %then.4 ], [ %i.3.3, %loopentry.3 ]		; <i32> [#uses=1]
+	%l_88173906_addr.0 = phi i8 [ 100, %then.3 ], [ %l_88173906_addr.1, %then.4 ], [ %l_88173906_addr.1, %loopentry.3 ]		; <i8> [#uses=1]
+	%inc.3 = add i32 %i.1.1, 1		; <i32> [#uses=1]
+	br label %loopentry.1
+endif.2:		; preds = %loopentry.1
+	br label %return
+return:		; preds = %endif.2, %else.7, %then.5, %then.2, %else.0, %then.1
+	%result.0 = phi i32 [ 1624650671, %then.1 ], [ %tmp.25, %then.2 ], [ 3379, %then.5 ], [ 52410, %else.7 ], [ -1526438411, %endif.2 ], [ %tmp.12, %else.0 ]		; <i32> [#uses=1]
+	ret i32 %result.0
+}
diff --git a/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll b/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
new file mode 100644
index 0000000..c30bfa1
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
@@ -0,0 +1,71 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; END.
+
+define void @main() {
+entry:
+	%tmp.14.i19 = icmp eq i32 0, 2		; <i1> [#uses=1]
+	br i1 %tmp.14.i19, label %endif.1.i20, label %read_min.exit
+endif.1.i20:		; preds = %entry
+	%tmp.9.i.i = icmp eq i8* null, null		; <i1> [#uses=1]
+	br i1 %tmp.9.i.i, label %then.i12.i, label %then.i.i
+then.i.i:		; preds = %endif.1.i20
+	ret void
+then.i12.i:		; preds = %endif.1.i20
+	%tmp.9.i4.i = icmp eq i8* null, null		; <i1> [#uses=1]
+	br i1 %tmp.9.i4.i, label %endif.2.i33, label %then.i5.i
+then.i5.i:		; preds = %then.i12.i
+	ret void
+endif.2.i33:		; preds = %then.i12.i
+	br i1 false, label %loopexit.0.i40, label %no_exit.0.i35
+no_exit.0.i35:		; preds = %no_exit.0.i35, %endif.2.i33
+	%tmp.130.i = icmp slt i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp.130.i, label %loopexit.0.i40.loopexit, label %no_exit.0.i35
+loopexit.0.i40.loopexit:		; preds = %no_exit.0.i35
+	br label %loopexit.0.i40
+loopexit.0.i40:		; preds = %loopexit.0.i40.loopexit, %endif.2.i33
+	%tmp.341.i = icmp eq i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp.341.i, label %loopentry.1.i, label %read_min.exit
+loopentry.1.i:		; preds = %loopexit.0.i40
+	%tmp.347.i = icmp sgt i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp.347.i, label %no_exit.1.i41, label %loopexit.2.i44
+no_exit.1.i41:		; preds = %endif.5.i, %loopentry.1.i
+	%indvar.i42 = phi i32 [ %indvar.next.i, %endif.5.i ], [ 0, %loopentry.1.i ]		; <i32> [#uses=1]
+	%tmp.355.i = icmp eq i32 0, 3		; <i1> [#uses=1]
+	br i1 %tmp.355.i, label %endif.5.i, label %read_min.exit
+endif.5.i:		; preds = %no_exit.1.i41
+	%tmp.34773.i = icmp sgt i32 0, 0		; <i1> [#uses=1]
+	%indvar.next.i = add i32 %indvar.i42, 1		; <i32> [#uses=1]
+	br i1 %tmp.34773.i, label %no_exit.1.i41, label %loopexit.1.i.loopexit
+loopexit.1.i.loopexit:		; preds = %endif.5.i
+	ret void
+loopexit.2.i44:		; preds = %loopentry.1.i
+	ret void
+read_min.exit:		; preds = %no_exit.1.i41, %loopexit.0.i40, %entry
+	%tmp.23 = icmp eq i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp.23, label %endif.1, label %then.1
+then.1:		; preds = %read_min.exit
+	br i1 false, label %endif.0.i, label %then.0.i
+then.0.i:		; preds = %then.1
+	br i1 false, label %endif.1.i, label %then.1.i
+endif.0.i:		; preds = %then.1
+	br i1 false, label %endif.1.i, label %then.1.i
+then.1.i:		; preds = %endif.0.i, %then.0.i
+	br i1 false, label %getfree.exit, label %then.2.i
+endif.1.i:		; preds = %endif.0.i, %then.0.i
+	br i1 false, label %getfree.exit, label %then.2.i
+then.2.i:		; preds = %endif.1.i, %then.1.i
+	ret void
+getfree.exit:		; preds = %endif.1.i, %then.1.i
+	ret void
+endif.1:		; preds = %read_min.exit
+	%tmp.27.i = getelementptr i32* null, i32 0		; <i32*> [#uses=0]
+	br i1 false, label %loopexit.0.i15, label %no_exit.0.i14
+no_exit.0.i14:		; preds = %endif.1
+	ret void
+loopexit.0.i15:		; preds = %endif.1
+	br i1 false, label %primal_start_artificial.exit, label %no_exit.1.i16
+no_exit.1.i16:		; preds = %no_exit.1.i16, %loopexit.0.i15
+	br i1 false, label %primal_start_artificial.exit, label %no_exit.1.i16
+primal_start_artificial.exit:		; preds = %no_exit.1.i16, %loopexit.0.i15
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll b/test/Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll
new file mode 100644
index 0000000..477c9c9
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll
@@ -0,0 +1,75 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; END.
+
+	%arraytype.1.Char = type { i32, [0 x i8] }
+	%arraytype.4.Signed = type { i32, [0 x i32] }
+	%functiontype.23 = type %structtype.Task* (%structtype.Task*, %structtype.Packet*, %structtype.FailedRun*)
+	%functiontype.27 = type %structtype.object* ()
+	%functiontype.28 = type i1 (%structtype.object*, %structtype.object_vtable*)
+	%functiontype.39 = type i32 (%structtype.listiter*)
+	%opaquetype.RuntimeTypeInfo = type i8* (i8*)
+	%structtype.AssertionError_vtable = type { %structtype.FailedRun_vtable }
+	%structtype.DeviceTask = type { %structtype.Task }
+	%structtype.FailedRun = type { %structtype.object }
+	%structtype.FailedRun_vtable = type { %structtype.object_vtable }
+	%structtype.Packet = type { %structtype.object, %structtype.list.1*, i32, i32, i32, %structtype.Packet* }
+	%structtype.Task = type { %structtype.TaskState, %structtype.FailedRun*, i32, %structtype.Packet*, %structtype.Task*, i32 }
+	%structtype.TaskState = type { %structtype.object, i1, i1, i1 }
+	%structtype.list.1 = type { %arraytype.4.Signed* }
+	%structtype.listiter = type { %structtype.list.1*, i32 }
+	%structtype.object = type { %structtype.object_vtable* }
+	%structtype.object_vtable = type { %structtype.object_vtable*, %opaquetype.RuntimeTypeInfo*, %arraytype.1.Char*, %functiontype.27* }
+@structinstance.59 = external global %structtype.AssertionError_vtable		; <%structtype.AssertionError_vtable*> [#uses=0]
+
+declare fastcc i1 @ll_isinstance__objectPtr_object_vtablePtr()
+
+declare fastcc void @ll_listnext__listiterPtr()
+
+define fastcc void @WorkTask.fn() {
+block0:
+	br label %block1
+block1:		; preds = %block0
+	%v2542 = call fastcc i1 @ll_isinstance__objectPtr_object_vtablePtr( )		; <i1> [#uses=1]
+	br i1 %v2542, label %block4, label %block2
+block2:		; preds = %block1
+	br label %block3
+block3:		; preds = %block2
+	unwind
+block4:		; preds = %block1
+	br label %block5
+block5:		; preds = %block4
+	%v2565 = icmp eq %structtype.Packet* null, null		; <i1> [#uses=1]
+	br i1 %v2565, label %block15, label %block6
+block6:		; preds = %block5
+	%self_2575 = phi %structtype.DeviceTask* [ null, %block5 ]		; <%structtype.DeviceTask*> [#uses=1]
+	br i1 false, label %block14, label %block7
+block7:		; preds = %block14, %block6
+	%self_2635 = phi %structtype.DeviceTask* [ %self_2575, %block6 ], [ null, %block14 ]		; <%structtype.DeviceTask*> [#uses=1]
+	%tmp.124 = getelementptr %structtype.Packet* null, i32 0, i32 2		; <i32*> [#uses=0]
+	br label %block8
+block8:		; preds = %block10, %block7
+	%self_2672 = phi %structtype.DeviceTask* [ %self_2635, %block7 ], [ null, %block10 ]		; <%structtype.DeviceTask*> [#uses=0]
+	invoke fastcc void @ll_listnext__listiterPtr( )
+			to label %block9 unwind label %block8_exception_handling
+block8_exception_handling:		; preds = %block8
+	br i1 false, label %block8_exception_found_branchto_block12, label %block8_not_exception_structinstance.10
+block8_not_exception_structinstance.10:		; preds = %block8_exception_handling
+	unwind
+block8_exception_found_branchto_block12:		; preds = %block8_exception_handling
+	br label %block12
+block9:		; preds = %block8
+	br i1 false, label %block11, label %block10
+block10:		; preds = %block11, %block9
+	br label %block8
+block11:		; preds = %block9
+	br label %block10
+block12:		; preds = %block8_exception_found_branchto_block12
+	br label %block13
+block13:		; preds = %block15, %block12
+	ret void
+block14:		; preds = %block6
+	br label %block7
+block15:		; preds = %block5
+	%v2586 = phi %structtype.DeviceTask* [ null, %block5 ]		; <%structtype.DeviceTask*> [#uses=0]
+	br label %block13
+}
diff --git a/test/Transforms/SimplifyCFG/2005-10-02-InvokeSimplify.ll b/test/Transforms/SimplifyCFG/2005-10-02-InvokeSimplify.ll
new file mode 100644
index 0000000..778aa3b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2005-10-02-InvokeSimplify.ll
@@ -0,0 +1,15 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define i1 @foo() {
+	%X = invoke i1 @foo( )
+			to label %N unwind label %F		; <i1> [#uses=1]
+F:		; preds = %0
+	ret i1 false
+N:		; preds = %0
+	br i1 %X, label %A, label %B
+A:		; preds = %N
+	ret i1 true
+B:		; preds = %N
+	ret i1 true
+}
+
diff --git a/test/Transforms/SimplifyCFG/2005-12-03-IncorrectPHIFold.ll b/test/Transforms/SimplifyCFG/2005-12-03-IncorrectPHIFold.ll
new file mode 100644
index 0000000..760aa13
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2005-12-03-IncorrectPHIFold.ll
@@ -0,0 +1,124 @@
+; Make sure this doesn't turn into an infinite loop
+
+; RUN: opt < %s -simplifycfg -constprop -simplifycfg |\
+; RUN:   llvm-dis | grep bb86
+; END.
+	
+%struct.anon = type { i32, i32, i32, i32, [1024 x i8] }
+@_zero_ = external global %struct.anon*		; <%struct.anon**> [#uses=2]
+@_one_ = external global %struct.anon*		; <%struct.anon**> [#uses=4]
+@str = internal constant [4 x i8] c"%d\0A\00"		; <[4 x i8]*> [#uses=0]
+
+declare i32 @bc_compare(%struct.anon*, %struct.anon*)
+
+declare void @free_num(%struct.anon**)
+
+declare %struct.anon* @copy_num(%struct.anon*)
+
+declare void @init_num(%struct.anon**)
+
+declare %struct.anon* @new_num(i32, i32)
+
+declare void @int2num(%struct.anon**, i32)
+
+declare void @bc_multiply(%struct.anon*, %struct.anon*, %struct.anon**, i32)
+
+declare void @bc_raise(%struct.anon*, %struct.anon*, %struct.anon**, i32)
+
+declare i32 @bc_divide(%struct.anon*, %struct.anon*, %struct.anon**, i32)
+
+declare void @bc_add(%struct.anon*, %struct.anon*, %struct.anon**)
+
+declare i32 @_do_compare(%struct.anon*, %struct.anon*, i32, i32)
+
+declare i32 @printf(i8*, ...)
+
+define i32 @bc_sqrt(%struct.anon** %num, i32 %scale) {
+entry:
+	%guess = alloca %struct.anon*		; <%struct.anon**> [#uses=7]
+	%guess1 = alloca %struct.anon*		; <%struct.anon**> [#uses=7]
+	%point5 = alloca %struct.anon*		; <%struct.anon**> [#uses=3]
+	%tmp = load %struct.anon** %num		; <%struct.anon*> [#uses=1]
+	%tmp1 = load %struct.anon** @_zero_		; <%struct.anon*> [#uses=1]
+	%tmp.upgrd.1 = call i32 @bc_compare( %struct.anon* %tmp, %struct.anon* %tmp1 )		; <i32> [#uses=2]
+	%tmp.upgrd.2 = icmp slt i32 %tmp.upgrd.1, 0		; <i1> [#uses=1]
+	br i1 %tmp.upgrd.2, label %cond_true, label %cond_false
+cond_true:		; preds = %entry
+	ret i32 0
+cond_false:		; preds = %entry
+	%tmp5 = icmp eq i32 %tmp.upgrd.1, 0		; <i1> [#uses=1]
+	br i1 %tmp5, label %cond_true6, label %cond_next13
+cond_true6:		; preds = %cond_false
+	call void @free_num( %struct.anon** %num )
+	%tmp8 = load %struct.anon** @_zero_		; <%struct.anon*> [#uses=1]
+	%tmp9 = call %struct.anon* @copy_num( %struct.anon* %tmp8 )		; <%struct.anon*> [#uses=1]
+	store %struct.anon* %tmp9, %struct.anon** %num
+	ret i32 1
+cond_next13:		; preds = %cond_false
+	%tmp15 = load %struct.anon** %num		; <%struct.anon*> [#uses=1]
+	%tmp16 = load %struct.anon** @_one_		; <%struct.anon*> [#uses=1]
+	%tmp17 = call i32 @bc_compare( %struct.anon* %tmp15, %struct.anon* %tmp16 )		; <i32> [#uses=2]
+	%tmp19 = icmp eq i32 %tmp17, 0		; <i1> [#uses=1]
+	br i1 %tmp19, label %cond_true20, label %cond_next27
+cond_true20:		; preds = %cond_next13
+	call void @free_num( %struct.anon** %num )
+	%tmp22 = load %struct.anon** @_one_		; <%struct.anon*> [#uses=1]
+	%tmp23 = call %struct.anon* @copy_num( %struct.anon* %tmp22 )		; <%struct.anon*> [#uses=1]
+	store %struct.anon* %tmp23, %struct.anon** %num
+	ret i32 1
+cond_next27:		; preds = %cond_next13
+	%tmp29 = load %struct.anon** %num		; <%struct.anon*> [#uses=1]
+	%tmp30 = getelementptr %struct.anon* %tmp29, i32 0, i32 2		; <i32*> [#uses=1]
+	%tmp31 = load i32* %tmp30		; <i32> [#uses=2]
+	%tmp33 = icmp sge i32 %tmp31, %scale		; <i1> [#uses=1]
+	%max = select i1 %tmp33, i32 %tmp31, i32 %scale		; <i32> [#uses=4]
+	%tmp35 = add i32 %max, 2		; <i32> [#uses=0]
+	call void @init_num( %struct.anon** %guess )
+	call void @init_num( %struct.anon** %guess1 )
+	%tmp36 = call %struct.anon* @new_num( i32 1, i32 1 )		; <%struct.anon*> [#uses=2]
+	store %struct.anon* %tmp36, %struct.anon** %point5
+	%tmp.upgrd.3 = getelementptr %struct.anon* %tmp36, i32 0, i32 4, i32 1		; <i8*> [#uses=1]
+	store i8 5, i8* %tmp.upgrd.3
+	%tmp39 = icmp slt i32 %tmp17, 0		; <i1> [#uses=1]
+	br i1 %tmp39, label %cond_true40, label %cond_false43
+cond_true40:		; preds = %cond_next27
+	%tmp41 = load %struct.anon** @_one_		; <%struct.anon*> [#uses=1]
+	%tmp42 = call %struct.anon* @copy_num( %struct.anon* %tmp41 )		; <%struct.anon*> [#uses=1]
+	store %struct.anon* %tmp42, %struct.anon** %guess
+	br label %bb80.outer
+cond_false43:		; preds = %cond_next27
+	call void @int2num( %struct.anon** %guess, i32 10 )
+	%tmp45 = load %struct.anon** %num		; <%struct.anon*> [#uses=1]
+	%tmp46 = getelementptr %struct.anon* %tmp45, i32 0, i32 1		; <i32*> [#uses=1]
+	%tmp47 = load i32* %tmp46		; <i32> [#uses=1]
+	call void @int2num( %struct.anon** %guess1, i32 %tmp47 )
+	%tmp48 = load %struct.anon** %guess1		; <%struct.anon*> [#uses=1]
+	%tmp49 = load %struct.anon** %point5		; <%struct.anon*> [#uses=1]
+	call void @bc_multiply( %struct.anon* %tmp48, %struct.anon* %tmp49, %struct.anon** %guess1, i32 %max )
+	%tmp51 = load %struct.anon** %guess1		; <%struct.anon*> [#uses=1]
+	%tmp52 = getelementptr %struct.anon* %tmp51, i32 0, i32 2		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp52
+	%tmp53 = load %struct.anon** %guess		; <%struct.anon*> [#uses=1]
+	%tmp54 = load %struct.anon** %guess1		; <%struct.anon*> [#uses=1]
+	call void @bc_raise( %struct.anon* %tmp53, %struct.anon* %tmp54, %struct.anon** %guess, i32 %max )
+	br label %bb80.outer
+bb80.outer:		; preds = %cond_true83, %cond_false43, %cond_true40
+	%done.1.ph = phi i32 [ 1, %cond_true83 ], [ 0, %cond_true40 ], [ 0, %cond_false43 ]		; <i32> [#uses=1]
+	br label %bb80
+bb80:		; preds = %cond_true83, %bb80.outer
+	%tmp82 = icmp eq i32 %done.1.ph, 0		; <i1> [#uses=1]
+	br i1 %tmp82, label %cond_true83, label %bb86
+cond_true83:		; preds = %bb80
+	%tmp71 = call i32 @_do_compare( %struct.anon* null, %struct.anon* null, i32 0, i32 1 )		; <i32> [#uses=1]
+	%tmp76 = icmp eq i32 %tmp71, 0		; <i1> [#uses=1]
+	br i1 %tmp76, label %bb80.outer, label %bb80
+bb86:		; preds = %bb80
+	call void @free_num( %struct.anon** %num )
+	%tmp88 = load %struct.anon** %guess		; <%struct.anon*> [#uses=1]
+	%tmp89 = load %struct.anon** @_one_		; <%struct.anon*> [#uses=1]
+	%tmp92 = call i32 @bc_divide( %struct.anon* %tmp88, %struct.anon* %tmp89, %struct.anon** %num, i32 %max )		; <i32> [#uses=0]
+	call void @free_num( %struct.anon** %guess )
+	call void @free_num( %struct.anon** %guess1 )
+	call void @free_num( %struct.anon** %point5 )
+	ret i32 1
+}
diff --git a/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll b/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
new file mode 100644
index 0000000..32f49e6
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
@@ -0,0 +1,27 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define void @polnel_() {
+entry:
+	%tmp595 = icmp slt i32 0, 0		; <i1> [#uses=4]
+	br i1 %tmp595, label %bb148.critedge, label %cond_true40
+bb36:		; preds = %bb43
+	br i1 %tmp595, label %bb43, label %cond_true40
+cond_true40:		; preds = %bb46, %cond_true40, %bb36, %entry
+	%tmp397 = icmp sgt i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp397, label %bb43, label %cond_true40
+bb43:		; preds = %cond_true40, %bb36
+	br i1 false, label %bb53, label %bb36
+bb46:		; preds = %bb53
+	br i1 %tmp595, label %bb53, label %cond_true40
+bb53:		; preds = %bb46, %bb43
+	br i1 false, label %bb102, label %bb46
+bb92.preheader:		; preds = %bb102
+	ret void
+bb102:		; preds = %bb53
+	br i1 %tmp595, label %bb148, label %bb92.preheader
+bb148.critedge:		; preds = %entry
+	ret void
+bb148:		; preds = %bb102
+	ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/2006-06-12-InfLoop.ll b/test/Transforms/SimplifyCFG/2006-06-12-InfLoop.ll
new file mode 100644
index 0000000..21cfb26
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-06-12-InfLoop.ll
@@ -0,0 +1,413 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; END.
+
+define void @main(i32 %c) {
+entry:
+	%tmp.9 = icmp eq i32 %c, 2		; <i1> [#uses=1]
+	br i1 %tmp.9, label %endif.0, label %then.0
+then.0:		; preds = %entry
+	ret void
+endif.0:		; preds = %entry
+	br i1 false, label %then.1, label %endif.1
+then.1:		; preds = %endif.0
+	ret void
+endif.1:		; preds = %endif.0
+	br i1 false, label %then.2, label %endif.2
+then.2:		; preds = %endif.1
+	ret void
+endif.2:		; preds = %endif.1
+	br i1 false, label %then.3, label %loopentry.0
+then.3:		; preds = %endif.2
+	ret void
+loopentry.0:		; preds = %endif.2
+	br i1 false, label %no_exit.0.preheader, label %loopexit.0
+no_exit.0.preheader:		; preds = %loopentry.0
+	br label %no_exit.0
+no_exit.0:		; preds = %endif.4, %no_exit.0.preheader
+	br i1 false, label %then.4, label %endif.4
+then.4:		; preds = %no_exit.0
+	ret void
+endif.4:		; preds = %no_exit.0
+	br i1 false, label %no_exit.0, label %loopexit.0.loopexit
+loopexit.0.loopexit:		; preds = %endif.4
+	br label %loopexit.0
+loopexit.0:		; preds = %loopexit.0.loopexit, %loopentry.0
+	br i1 false, label %then.5, label %loopentry.1
+then.5:		; preds = %loopexit.0
+	ret void
+loopentry.1:		; preds = %loopexit.0
+	%tmp.143 = icmp sgt i32 0, 0		; <i1> [#uses=4]
+	br i1 %tmp.143, label %no_exit.1.preheader, label %loopexit.1
+no_exit.1.preheader:		; preds = %loopentry.1
+	br label %no_exit.1
+no_exit.1:		; preds = %endif.6, %no_exit.1.preheader
+	br i1 false, label %then.6, label %shortcirc_next.3
+shortcirc_next.3:		; preds = %no_exit.1
+	br i1 false, label %then.6, label %shortcirc_next.4
+shortcirc_next.4:		; preds = %shortcirc_next.3
+	br i1 false, label %then.6, label %endif.6
+then.6:		; preds = %shortcirc_next.4, %shortcirc_next.3, %no_exit.1
+	ret void
+endif.6:		; preds = %shortcirc_next.4
+	br i1 false, label %no_exit.1, label %loopexit.1.loopexit
+loopexit.1.loopexit:		; preds = %endif.6
+	br label %loopexit.1
+loopexit.1:		; preds = %loopexit.1.loopexit, %loopentry.1
+	br i1 false, label %then.i, label %loopentry.0.i
+then.i:		; preds = %loopexit.1
+	ret void
+loopentry.0.i:		; preds = %loopexit.1
+	br i1 %tmp.143, label %no_exit.0.i.preheader, label %readvector.exit
+no_exit.0.i.preheader:		; preds = %loopentry.0.i
+	br label %no_exit.0.i
+no_exit.0.i:		; preds = %loopexit.1.i, %no_exit.0.i.preheader
+	br i1 false, label %no_exit.1.i.preheader, label %loopexit.1.i
+no_exit.1.i.preheader:		; preds = %no_exit.0.i
+	br label %no_exit.1.i
+no_exit.1.i:		; preds = %loopexit.2.i, %no_exit.1.i.preheader
+	br i1 false, label %no_exit.2.i.preheader, label %loopexit.2.i
+no_exit.2.i.preheader:		; preds = %no_exit.1.i
+	br label %no_exit.2.i
+no_exit.2.i:		; preds = %no_exit.2.i, %no_exit.2.i.preheader
+	br i1 false, label %no_exit.2.i, label %loopexit.2.i.loopexit
+loopexit.2.i.loopexit:		; preds = %no_exit.2.i
+	br label %loopexit.2.i
+loopexit.2.i:		; preds = %loopexit.2.i.loopexit, %no_exit.1.i
+	br i1 false, label %no_exit.1.i, label %loopexit.1.i.loopexit
+loopexit.1.i.loopexit:		; preds = %loopexit.2.i
+	br label %loopexit.1.i
+loopexit.1.i:		; preds = %loopexit.1.i.loopexit, %no_exit.0.i
+	br i1 false, label %no_exit.0.i, label %readvector.exit.loopexit
+readvector.exit.loopexit:		; preds = %loopexit.1.i
+	br label %readvector.exit
+readvector.exit:		; preds = %readvector.exit.loopexit, %loopentry.0.i
+	br i1 %tmp.143, label %loopentry.1.preheader.i, label %loopexit.0.i
+loopentry.1.preheader.i:		; preds = %readvector.exit
+	br label %loopentry.1.outer.i
+loopentry.1.outer.i:		; preds = %loopexit.1.i110, %loopentry.1.preheader.i
+	br label %loopentry.1.i85
+loopentry.1.i85.loopexit:		; preds = %hamming.exit16.i
+	br label %loopentry.1.i85
+loopentry.1.i85:		; preds = %loopentry.1.i85.loopexit, %loopentry.1.outer.i
+	br i1 false, label %no_exit.1.preheader.i, label %loopexit.1.i110.loopexit1
+no_exit.1.preheader.i:		; preds = %loopentry.1.i85
+	br label %no_exit.1.i87
+no_exit.1.i87:		; preds = %then.1.i107, %no_exit.1.preheader.i
+	br i1 false, label %no_exit.i.i101.preheader, label %hamming.exit.i104
+no_exit.i.i101.preheader:		; preds = %no_exit.1.i87
+	br label %no_exit.i.i101
+no_exit.i.i101:		; preds = %no_exit.i.i101, %no_exit.i.i101.preheader
+	br i1 false, label %no_exit.i.i101, label %hamming.exit.i104.loopexit
+hamming.exit.i104.loopexit:		; preds = %no_exit.i.i101
+	br label %hamming.exit.i104
+hamming.exit.i104:		; preds = %hamming.exit.i104.loopexit, %no_exit.1.i87
+	br i1 false, label %no_exit.i15.i.preheader, label %hamming.exit16.i
+no_exit.i15.i.preheader:		; preds = %hamming.exit.i104
+	br label %no_exit.i15.i
+no_exit.i15.i:		; preds = %no_exit.i15.i, %no_exit.i15.i.preheader
+	br i1 false, label %no_exit.i15.i, label %hamming.exit16.i.loopexit
+hamming.exit16.i.loopexit:		; preds = %no_exit.i15.i
+	br label %hamming.exit16.i
+hamming.exit16.i:		; preds = %hamming.exit16.i.loopexit, %hamming.exit.i104
+	br i1 false, label %loopentry.1.i85.loopexit, label %then.1.i107
+then.1.i107:		; preds = %hamming.exit16.i
+	br i1 false, label %no_exit.1.i87, label %loopexit.1.i110.loopexit
+loopexit.1.i110.loopexit:		; preds = %then.1.i107
+	br label %loopexit.1.i110
+loopexit.1.i110.loopexit1:		; preds = %loopentry.1.i85
+	br label %loopexit.1.i110
+loopexit.1.i110:		; preds = %loopexit.1.i110.loopexit1, %loopexit.1.i110.loopexit
+	br i1 false, label %loopentry.1.outer.i, label %loopexit.0.i.loopexit
+loopexit.0.i.loopexit:		; preds = %loopexit.1.i110
+	br label %loopexit.0.i
+loopexit.0.i:		; preds = %loopexit.0.i.loopexit, %readvector.exit
+	br i1 false, label %UnifiedReturnBlock.i113, label %then.2.i112
+then.2.i112:		; preds = %loopexit.0.i
+	br label %checkham.exit
+UnifiedReturnBlock.i113:		; preds = %loopexit.0.i
+	br label %checkham.exit
+checkham.exit:		; preds = %UnifiedReturnBlock.i113, %then.2.i112
+	br i1 false, label %loopentry.1.i14.preheader, label %loopentry.3.i.preheader
+loopentry.1.i14.preheader:		; preds = %checkham.exit
+	br label %loopentry.1.i14
+loopentry.1.i14:		; preds = %loopexit.1.i18, %loopentry.1.i14.preheader
+	br i1 false, label %no_exit.1.i16.preheader, label %loopexit.1.i18
+no_exit.1.i16.preheader:		; preds = %loopentry.1.i14
+	br label %no_exit.1.i16
+no_exit.1.i16:		; preds = %no_exit.1.i16, %no_exit.1.i16.preheader
+	br i1 false, label %no_exit.1.i16, label %loopexit.1.i18.loopexit
+loopexit.1.i18.loopexit:		; preds = %no_exit.1.i16
+	br label %loopexit.1.i18
+loopexit.1.i18:		; preds = %loopexit.1.i18.loopexit, %loopentry.1.i14
+	br i1 false, label %loopentry.1.i14, label %loopentry.3.i.loopexit
+loopentry.3.i.loopexit:		; preds = %loopexit.1.i18
+	br label %loopentry.3.i.preheader
+loopentry.3.i.preheader:		; preds = %loopentry.3.i.loopexit, %checkham.exit
+	br label %loopentry.3.i
+loopentry.3.i:		; preds = %endif.1.i, %loopentry.3.i.preheader
+	br i1 false, label %loopentry.4.i.preheader, label %endif.1.i
+loopentry.4.i.preheader:		; preds = %loopentry.3.i
+	br label %loopentry.4.i
+loopentry.4.i:		; preds = %loopexit.4.i, %loopentry.4.i.preheader
+	br i1 false, label %no_exit.4.i.preheader, label %loopexit.4.i
+no_exit.4.i.preheader:		; preds = %loopentry.4.i
+	br label %no_exit.4.i
+no_exit.4.i:		; preds = %no_exit.4.i.backedge, %no_exit.4.i.preheader
+	br i1 false, label %endif.0.i, label %else.i
+else.i:		; preds = %no_exit.4.i
+	br i1 false, label %no_exit.4.i.backedge, label %loopexit.4.i.loopexit
+no_exit.4.i.backedge:		; preds = %endif.0.i, %else.i
+	br label %no_exit.4.i
+endif.0.i:		; preds = %no_exit.4.i
+	br i1 false, label %no_exit.4.i.backedge, label %loopexit.4.i.loopexit
+loopexit.4.i.loopexit:		; preds = %endif.0.i, %else.i
+	br label %loopexit.4.i
+loopexit.4.i:		; preds = %loopexit.4.i.loopexit, %loopentry.4.i
+	br i1 false, label %loopentry.4.i, label %endif.1.i.loopexit
+endif.1.i.loopexit:		; preds = %loopexit.4.i
+	br label %endif.1.i
+endif.1.i:		; preds = %endif.1.i.loopexit, %loopentry.3.i
+	%exitcond = icmp eq i32 0, 10		; <i1> [#uses=1]
+	br i1 %exitcond, label %generateT.exit, label %loopentry.3.i
+generateT.exit:		; preds = %endif.1.i
+	br i1 false, label %then.0.i, label %loopentry.1.i30.preheader
+then.0.i:		; preds = %generateT.exit
+	ret void
+loopentry.1.i30.loopexit:		; preds = %loopexit.3.i
+	br label %loopentry.1.i30.backedge
+loopentry.1.i30.preheader:		; preds = %generateT.exit
+	br label %loopentry.1.i30
+loopentry.1.i30:		; preds = %loopentry.1.i30.backedge, %loopentry.1.i30.preheader
+	br i1 %tmp.143, label %no_exit.0.i31.preheader, label %loopentry.1.i30.backedge
+loopentry.1.i30.backedge:		; preds = %loopentry.1.i30, %loopentry.1.i30.loopexit
+	br label %loopentry.1.i30
+no_exit.0.i31.preheader:		; preds = %loopentry.1.i30
+	br label %no_exit.0.i31
+no_exit.0.i31:		; preds = %loopexit.3.i, %no_exit.0.i31.preheader
+	br i1 false, label %then.1.i, label %else.0.i
+then.1.i:		; preds = %no_exit.0.i31
+	br i1 undef, label %then.0.i29, label %loopentry.0.i31
+then.0.i29:		; preds = %then.1.i
+	unreachable
+loopentry.0.i31:		; preds = %then.1.i
+	br i1 false, label %no_exit.0.i38.preheader, label %loopentry.1.i.preheader
+no_exit.0.i38.preheader:		; preds = %loopentry.0.i31
+	br label %no_exit.0.i38
+no_exit.0.i38:		; preds = %no_exit.0.i38, %no_exit.0.i38.preheader
+	br i1 undef, label %no_exit.0.i38, label %loopentry.1.i.preheader.loopexit
+loopentry.1.i.preheader.loopexit:		; preds = %no_exit.0.i38
+	br label %loopentry.1.i.preheader
+loopentry.1.i.preheader:		; preds = %loopentry.1.i.preheader.loopexit, %loopentry.0.i31
+	br label %loopentry.1.i
+loopentry.1.i:		; preds = %endif.2.i, %loopentry.1.i.preheader
+	br i1 undef, label %loopentry.2.i39.preheader, label %loopexit.1.i79.loopexit2
+loopentry.2.i39.preheader:		; preds = %loopentry.1.i
+	br label %loopentry.2.i39
+loopentry.2.i39:		; preds = %loopexit.5.i77, %loopentry.2.i39.preheader
+	br i1 false, label %loopentry.3.i40.preheader, label %hamming.exit.i71
+loopentry.3.i40.preheader:		; preds = %loopentry.2.i39
+	br label %loopentry.3.i40
+loopentry.3.i40:		; preds = %loopexit.3.i51, %loopentry.3.i40.preheader
+	br i1 false, label %no_exit.3.preheader.i42, label %loopexit.3.i51
+no_exit.3.preheader.i42:		; preds = %loopentry.3.i40
+	br label %no_exit.3.i49
+no_exit.3.i49:		; preds = %no_exit.3.i49, %no_exit.3.preheader.i42
+	br i1 undef, label %no_exit.3.i49, label %loopexit.3.i51.loopexit
+loopexit.3.i51.loopexit:		; preds = %no_exit.3.i49
+	br label %loopexit.3.i51
+loopexit.3.i51:		; preds = %loopexit.3.i51.loopexit, %loopentry.3.i40
+	br i1 undef, label %loopentry.3.i40, label %loopentry.4.i52
+loopentry.4.i52:		; preds = %loopexit.3.i51
+	br i1 false, label %no_exit.4.i54.preheader, label %hamming.exit.i71
+no_exit.4.i54.preheader:		; preds = %loopentry.4.i52
+	br label %no_exit.4.i54
+no_exit.4.i54:		; preds = %no_exit.4.backedge.i, %no_exit.4.i54.preheader
+	br i1 undef, label %then.1.i55, label %endif.1.i56
+then.1.i55:		; preds = %no_exit.4.i54
+	br i1 undef, label %no_exit.4.backedge.i, label %loopexit.4.i57
+no_exit.4.backedge.i:		; preds = %endif.1.i56, %then.1.i55
+	br label %no_exit.4.i54
+endif.1.i56:		; preds = %no_exit.4.i54
+	br i1 undef, label %no_exit.4.backedge.i, label %loopexit.4.i57
+loopexit.4.i57:		; preds = %endif.1.i56, %then.1.i55
+	br i1 false, label %no_exit.i.i69.preheader, label %hamming.exit.i71
+no_exit.i.i69.preheader:		; preds = %loopexit.4.i57
+	br label %no_exit.i.i69
+no_exit.i.i69:		; preds = %no_exit.i.i69, %no_exit.i.i69.preheader
+	br i1 undef, label %no_exit.i.i69, label %hamming.exit.i71.loopexit
+hamming.exit.i71.loopexit:		; preds = %no_exit.i.i69
+	br label %hamming.exit.i71
+hamming.exit.i71:		; preds = %hamming.exit.i71.loopexit, %loopexit.4.i57, %loopentry.4.i52, %loopentry.2.i39
+	br i1 undef, label %endif.2.i, label %loopentry.5.i72
+loopentry.5.i72:		; preds = %hamming.exit.i71
+	br i1 false, label %shortcirc_next.i74.preheader, label %loopexit.5.i77
+shortcirc_next.i74.preheader:		; preds = %loopentry.5.i72
+	br label %shortcirc_next.i74
+shortcirc_next.i74:		; preds = %no_exit.5.i76, %shortcirc_next.i74.preheader
+	br i1 undef, label %no_exit.5.i76, label %loopexit.5.i77.loopexit
+no_exit.5.i76:		; preds = %shortcirc_next.i74
+	br i1 undef, label %shortcirc_next.i74, label %loopexit.5.i77.loopexit
+loopexit.5.i77.loopexit:		; preds = %no_exit.5.i76, %shortcirc_next.i74
+	br label %loopexit.5.i77
+loopexit.5.i77:		; preds = %loopexit.5.i77.loopexit, %loopentry.5.i72
+	br i1 undef, label %loopentry.2.i39, label %loopexit.1.i79.loopexit
+endif.2.i:		; preds = %hamming.exit.i71
+	br label %loopentry.1.i
+loopexit.1.i79.loopexit:		; preds = %loopexit.5.i77
+	br label %loopexit.1.i79
+loopexit.1.i79.loopexit2:		; preds = %loopentry.1.i
+	br label %loopexit.1.i79
+loopexit.1.i79:		; preds = %loopexit.1.i79.loopexit2, %loopexit.1.i79.loopexit
+	br i1 undef, label %then.3.i, label %loopentry.6.i80
+then.3.i:		; preds = %loopexit.1.i79
+	br i1 false, label %no_exit.6.i82.preheader, label %run.exit
+loopentry.6.i80:		; preds = %loopexit.1.i79
+	br i1 false, label %no_exit.6.i82.preheader, label %run.exit
+no_exit.6.i82.preheader:		; preds = %loopentry.6.i80, %then.3.i
+	br label %no_exit.6.i82
+no_exit.6.i82:		; preds = %no_exit.6.i82, %no_exit.6.i82.preheader
+	br i1 undef, label %no_exit.6.i82, label %run.exit.loopexit
+run.exit.loopexit:		; preds = %no_exit.6.i82
+	br label %run.exit
+run.exit:		; preds = %run.exit.loopexit, %loopentry.6.i80, %then.3.i
+	br i1 false, label %no_exit.1.i36.preheader, label %loopentry.3.i37
+else.0.i:		; preds = %no_exit.0.i31
+	br i1 false, label %then.0.i4, label %loopentry.0.i6
+then.0.i4:		; preds = %else.0.i
+	unreachable
+loopentry.0.i6:		; preds = %else.0.i
+	br i1 false, label %no_exit.0.i8.preheader, label %loopentry.2.i.preheader
+no_exit.0.i8.preheader:		; preds = %loopentry.0.i6
+	br label %no_exit.0.i8
+no_exit.0.i8:		; preds = %no_exit.0.i8, %no_exit.0.i8.preheader
+	br i1 false, label %no_exit.0.i8, label %loopentry.2.i.preheader.loopexit
+loopentry.2.i.preheader.loopexit:		; preds = %no_exit.0.i8
+	br label %loopentry.2.i.preheader
+loopentry.2.i.preheader:		; preds = %loopentry.2.i.preheader.loopexit, %loopentry.0.i6
+	br label %loopentry.2.i
+loopentry.2.i:		; preds = %endif.3.i19, %loopentry.2.i.preheader
+	br i1 false, label %loopentry.3.i10.preheader, label %loopentry.4.i15
+loopentry.3.i10.preheader:		; preds = %loopentry.2.i
+	br label %loopentry.3.i10
+loopentry.3.i10:		; preds = %loopexit.3.i14, %loopentry.3.i10.preheader
+	br i1 false, label %no_exit.3.preheader.i, label %loopexit.3.i14
+no_exit.3.preheader.i:		; preds = %loopentry.3.i10
+	br label %no_exit.3.i12
+no_exit.3.i12:		; preds = %no_exit.3.i12, %no_exit.3.preheader.i
+	br i1 false, label %no_exit.3.i12, label %loopexit.3.i14.loopexit
+loopexit.3.i14.loopexit:		; preds = %no_exit.3.i12
+	br label %loopexit.3.i14
+loopexit.3.i14:		; preds = %loopexit.3.i14.loopexit, %loopentry.3.i10
+	br i1 false, label %loopentry.3.i10, label %loopentry.4.i15.loopexit
+loopentry.4.i15.loopexit:		; preds = %loopexit.3.i14
+	br label %loopentry.4.i15
+loopentry.4.i15:		; preds = %loopentry.4.i15.loopexit, %loopentry.2.i
+	br i1 false, label %loopentry.5.outer.i.preheader, label %loopentry.7.i
+loopentry.5.outer.i.preheader:		; preds = %loopentry.4.i15
+	br label %loopentry.5.outer.i
+loopentry.5.outer.i:		; preds = %loopexit.5.i, %loopentry.5.outer.i.preheader
+	br label %loopentry.5.i
+loopentry.5.i:		; preds = %endif.1.i18, %loopentry.5.outer.i
+	br i1 false, label %no_exit.5.i.preheader, label %loopexit.5.i.loopexit3
+no_exit.5.i.preheader:		; preds = %loopentry.5.i
+	br label %no_exit.5.i
+no_exit.5.i:		; preds = %then.2.i, %no_exit.5.i.preheader
+	br i1 false, label %loopentry.6.i, label %endif.1.i18
+loopentry.6.i:		; preds = %no_exit.5.i
+	br i1 false, label %no_exit.6.preheader.i, label %loopexit.6.i
+no_exit.6.preheader.i:		; preds = %loopentry.6.i
+	br label %no_exit.6.i
+no_exit.6.i:		; preds = %no_exit.6.i, %no_exit.6.preheader.i
+	br i1 false, label %no_exit.6.i, label %loopexit.6.i.loopexit
+loopexit.6.i.loopexit:		; preds = %no_exit.6.i
+	br label %loopexit.6.i
+loopexit.6.i:		; preds = %loopexit.6.i.loopexit, %loopentry.6.i
+	br i1 false, label %then.2.i, label %endif.1.i18
+then.2.i:		; preds = %loopexit.6.i
+	br i1 false, label %no_exit.5.i, label %loopexit.5.i.loopexit
+endif.1.i18:		; preds = %loopexit.6.i, %no_exit.5.i
+	br label %loopentry.5.i
+loopexit.5.i.loopexit:		; preds = %then.2.i
+	br label %loopexit.5.i
+loopexit.5.i.loopexit3:		; preds = %loopentry.5.i
+	br label %loopexit.5.i
+loopexit.5.i:		; preds = %loopexit.5.i.loopexit3, %loopexit.5.i.loopexit
+	br i1 false, label %loopentry.5.outer.i, label %loopentry.7.i.loopexit
+loopentry.7.i.loopexit:		; preds = %loopexit.5.i
+	br label %loopentry.7.i
+loopentry.7.i:		; preds = %loopentry.7.i.loopexit, %loopentry.4.i15
+	br i1 false, label %no_exit.7.i.preheader, label %hamming.exit.i
+no_exit.7.i.preheader:		; preds = %loopentry.7.i
+	br label %no_exit.7.i
+no_exit.7.i:		; preds = %no_exit.7.i, %no_exit.7.i.preheader
+	br i1 false, label %no_exit.7.i, label %loopexit.7.i
+loopexit.7.i:		; preds = %no_exit.7.i
+	br i1 false, label %no_exit.i.i.preheader, label %hamming.exit.i
+no_exit.i.i.preheader:		; preds = %loopexit.7.i
+	br label %no_exit.i.i
+no_exit.i.i:		; preds = %no_exit.i.i, %no_exit.i.i.preheader
+	br i1 false, label %no_exit.i.i, label %hamming.exit.i.loopexit
+hamming.exit.i.loopexit:		; preds = %no_exit.i.i
+	br label %hamming.exit.i
+hamming.exit.i:		; preds = %hamming.exit.i.loopexit, %loopexit.7.i, %loopentry.7.i
+	br i1 false, label %endif.3.i19, label %loopentry.8.i
+loopentry.8.i:		; preds = %hamming.exit.i
+	br i1 false, label %shortcirc_next.i.preheader, label %loopexit.8.i
+shortcirc_next.i.preheader:		; preds = %loopentry.8.i
+	br label %shortcirc_next.i
+shortcirc_next.i:		; preds = %no_exit.8.i, %shortcirc_next.i.preheader
+	br i1 false, label %no_exit.8.i, label %loopexit.8.i.loopexit
+no_exit.8.i:		; preds = %shortcirc_next.i
+	br i1 false, label %shortcirc_next.i, label %loopexit.8.i.loopexit
+loopexit.8.i.loopexit:		; preds = %no_exit.8.i, %shortcirc_next.i
+	br label %loopexit.8.i
+loopexit.8.i:		; preds = %loopexit.8.i.loopexit, %loopentry.8.i
+	br i1 false, label %no_exit.9.i.preheader, label %endif.3.i19
+no_exit.9.i.preheader:		; preds = %loopexit.8.i
+	br label %no_exit.9.i
+no_exit.9.i:		; preds = %no_exit.9.i, %no_exit.9.i.preheader
+	br i1 false, label %no_exit.9.i, label %endif.3.i19.loopexit
+endif.3.i19.loopexit:		; preds = %no_exit.9.i
+	br label %endif.3.i19
+endif.3.i19:		; preds = %endif.3.i19.loopexit, %loopexit.8.i, %hamming.exit.i
+	br i1 false, label %loopentry.2.i, label %loopexit.1.i20
+loopexit.1.i20:		; preds = %endif.3.i19
+	br i1 false, label %then.4.i, label %UnifiedReturnBlock.i
+then.4.i:		; preds = %loopexit.1.i20
+	br label %runcont.exit
+UnifiedReturnBlock.i:		; preds = %loopexit.1.i20
+	br label %runcont.exit
+runcont.exit:		; preds = %UnifiedReturnBlock.i, %then.4.i
+	br i1 false, label %no_exit.1.i36.preheader, label %loopentry.3.i37
+no_exit.1.i36.preheader:		; preds = %runcont.exit, %run.exit
+	br label %no_exit.1.i36
+no_exit.1.i36:		; preds = %no_exit.1.i36, %no_exit.1.i36.preheader
+	br i1 false, label %no_exit.1.i36, label %loopentry.3.i37.loopexit
+loopentry.3.i37.loopexit:		; preds = %no_exit.1.i36
+	br label %loopentry.3.i37
+loopentry.3.i37:		; preds = %loopentry.3.i37.loopexit, %runcont.exit, %run.exit
+	br i1 false, label %loopentry.4.i38.preheader, label %loopexit.3.i
+loopentry.4.i38.preheader:		; preds = %loopentry.3.i37
+	br label %loopentry.4.i38
+loopentry.4.i38:		; preds = %loopexit.4.i42, %loopentry.4.i38.preheader
+	br i1 false, label %no_exit.3.i.preheader, label %loopexit.4.i42
+no_exit.3.i.preheader:		; preds = %loopentry.4.i38
+	br label %no_exit.3.i
+no_exit.3.i:		; preds = %no_exit.3.i.backedge, %no_exit.3.i.preheader
+	br i1 false, label %endif.3.i, label %else.1.i
+else.1.i:		; preds = %no_exit.3.i
+	br i1 false, label %no_exit.3.i.backedge, label %loopexit.4.i42.loopexit
+no_exit.3.i.backedge:		; preds = %endif.3.i, %else.1.i
+	br label %no_exit.3.i
+endif.3.i:		; preds = %no_exit.3.i
+	br i1 false, label %no_exit.3.i.backedge, label %loopexit.4.i42.loopexit
+loopexit.4.i42.loopexit:		; preds = %endif.3.i, %else.1.i
+	br label %loopexit.4.i42
+loopexit.4.i42:		; preds = %loopexit.4.i42.loopexit, %loopentry.4.i38
+	br i1 false, label %loopentry.4.i38, label %loopexit.3.i.loopexit
+loopexit.3.i.loopexit:		; preds = %loopexit.4.i42
+	br label %loopexit.3.i
+loopexit.3.i:		; preds = %loopexit.3.i.loopexit, %loopentry.3.i37
+	%tmp.13.i155 = icmp slt i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp.13.i155, label %no_exit.0.i31, label %loopentry.1.i30.loopexit
+}
diff --git a/test/Transforms/SimplifyCFG/2006-08-03-Crash.ll b/test/Transforms/SimplifyCFG/2006-08-03-Crash.ll
new file mode 100644
index 0000000..2c84c93
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-08-03-Crash.ll
@@ -0,0 +1,98 @@
+; RUN: opt < %s -gvn -simplifycfg \
+; RUN:   -disable-output
+; PR867
+; END.
+
+target datalayout = "E-p:32:32"
+target triple = "powerpc-apple-darwin8"
+	%struct.CUMULATIVE_ARGS = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+	%struct.eh_status = type opaque
+	%struct.emit_status = type { i32, i32, %struct.rtx_def*, %struct.rtx_def*, %struct.sequence_stack*, i32, %struct.location_t, i32, i8*, %struct.rtx_def** }
+	%struct.expr_status = type { i32, i32, i32, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def* }
+	%struct.function = type { %struct.eh_status*, %struct.expr_status*, %struct.emit_status*, %struct.varasm_status*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.function*, i32, i32, i32, i32, %struct.rtx_def*, %struct.CUMULATIVE_ARGS, %struct.rtx_def*, %struct.rtx_def*, %struct.initial_value_struct*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, i8, i32, i64, %struct.tree_node*, %struct.tree_node*, %struct.rtx_def*, %struct.varray_head_tag*, %struct.temp_slot*, i32, %struct.var_refs_queue*, i32, i32, %struct.rtvec_def*, %struct.tree_node*, i32, i32, i32, %struct.machine_function*, i32, i32, i8, i8, %struct.language_function*, %struct.rtx_def*, i32, i32, i32, i32, %struct.location_t, %struct.varray_head_tag*, %struct.tree_node*, i8, i8, i8 }
+	%struct.initial_value_struct = type opaque
+	%struct.lang_decl = type opaque
+	%struct.lang_type = type opaque
+	%struct.language_function = type opaque
+	%struct.location_t = type { i8*, i32 }
+	%struct.machine_function = type { i32, i32, i8*, i32, i32 }
+	%struct.rtunion = type { i32 }
+	%struct.rtvec_def = type { i32, [1 x %struct.rtx_def*] }
+	%struct.rtx_def = type { i16, i8, i8, %struct.u }
+	%struct.sequence_stack = type { %struct.rtx_def*, %struct.rtx_def*, %struct.sequence_stack* }
+	%struct.temp_slot = type opaque
+	%struct.tree_common = type { %struct.tree_node*, %struct.tree_node*, %union.tree_ann_d*, i8, i8, i8, i8, i8 }
+	%struct.tree_decl = type { %struct.tree_common, %struct.location_t, i32, %struct.tree_node*, i8, i8, i8, i8, i8, i8, i8, i8, i32, %struct.tree_decl_u1, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.rtx_def*, %struct.tree_decl_u2, %struct.tree_node*, %struct.tree_node*, i64, %struct.lang_decl* }
+	%struct.tree_decl_u1 = type { i64 }
+	%struct.tree_decl_u2 = type { %struct.function* }
+	%struct.tree_node = type { %struct.tree_decl }
+	%struct.tree_type = type { %struct.tree_common, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, i32, i16, i8, i8, i32, %struct.tree_node*, %struct.tree_node*, %struct.rtunion, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, i64, %struct.lang_type* }
+	%struct.u = type { [1 x i64] }
+	%struct.var_refs_queue = type { %struct.rtx_def*, i32, i32, %struct.var_refs_queue* }
+	%struct.varasm_status = type opaque
+	%struct.varray_head_tag = type { i32, i32, i32, i8*, %struct.u }
+	%union.tree_ann_d = type opaque
+@mode_class = external global [35 x i8]		; <[35 x i8]*> [#uses=3]
+
+define void @fold_builtin_classify() {
+entry:
+	%tmp63 = load i32* null		; <i32> [#uses=1]
+	switch i32 %tmp63, label %bb276 [
+		 i32 414, label %bb145
+		 i32 417, label %bb
+	]
+bb:		; preds = %entry
+	ret void
+bb145:		; preds = %entry
+	%tmp146 = load %struct.tree_node** null		; <%struct.tree_node*> [#uses=1]
+	%tmp148 = getelementptr %struct.tree_node* %tmp146, i32 0, i32 0, i32 0, i32 1		; <%struct.tree_node**> [#uses=1]
+	%tmp149 = load %struct.tree_node** %tmp148		; <%struct.tree_node*> [#uses=1]
+	%tmp150 = bitcast %struct.tree_node* %tmp149 to %struct.tree_type*		; <%struct.tree_type*> [#uses=1]
+	%tmp151 = getelementptr %struct.tree_type* %tmp150, i32 0, i32 6		; <i16*> [#uses=1]
+	%tmp151.upgrd.1 = bitcast i16* %tmp151 to i32*		; <i32*> [#uses=1]
+	%tmp152 = load i32* %tmp151.upgrd.1		; <i32> [#uses=1]
+	%tmp154 = lshr i32 %tmp152, 16		; <i32> [#uses=1]
+	%tmp154.mask = and i32 %tmp154, 127		; <i32> [#uses=1]
+	%gep.upgrd.2 = zext i32 %tmp154.mask to i64		; <i64> [#uses=1]
+	%tmp155 = getelementptr [35 x i8]* @mode_class, i32 0, i64 %gep.upgrd.2		; <i8*> [#uses=1]
+	%tmp156 = load i8* %tmp155		; <i8> [#uses=1]
+	%tmp157 = icmp eq i8 %tmp156, 4		; <i1> [#uses=1]
+	br i1 %tmp157, label %cond_next241, label %cond_true158
+cond_true158:		; preds = %bb145
+	%tmp172 = load %struct.tree_node** null		; <%struct.tree_node*> [#uses=1]
+	%tmp174 = getelementptr %struct.tree_node* %tmp172, i32 0, i32 0, i32 0, i32 1		; <%struct.tree_node**> [#uses=1]
+	%tmp175 = load %struct.tree_node** %tmp174		; <%struct.tree_node*> [#uses=1]
+	%tmp176 = bitcast %struct.tree_node* %tmp175 to %struct.tree_type*		; <%struct.tree_type*> [#uses=1]
+	%tmp177 = getelementptr %struct.tree_type* %tmp176, i32 0, i32 6		; <i16*> [#uses=1]
+	%tmp177.upgrd.3 = bitcast i16* %tmp177 to i32*		; <i32*> [#uses=1]
+	%tmp178 = load i32* %tmp177.upgrd.3		; <i32> [#uses=1]
+	%tmp180 = lshr i32 %tmp178, 16		; <i32> [#uses=1]
+	%tmp180.mask = and i32 %tmp180, 127		; <i32> [#uses=1]
+	%gep.upgrd.4 = zext i32 %tmp180.mask to i64		; <i64> [#uses=1]
+	%tmp181 = getelementptr [35 x i8]* @mode_class, i32 0, i64 %gep.upgrd.4		; <i8*> [#uses=1]
+	%tmp182 = load i8* %tmp181		; <i8> [#uses=1]
+	%tmp183 = icmp eq i8 %tmp182, 8		; <i1> [#uses=1]
+	br i1 %tmp183, label %cond_next241, label %cond_true184
+cond_true184:		; preds = %cond_true158
+	%tmp185 = load %struct.tree_node** null		; <%struct.tree_node*> [#uses=1]
+	%tmp187 = getelementptr %struct.tree_node* %tmp185, i32 0, i32 0, i32 0, i32 1		; <%struct.tree_node**> [#uses=1]
+	%tmp188 = load %struct.tree_node** %tmp187		; <%struct.tree_node*> [#uses=1]
+	%tmp189 = bitcast %struct.tree_node* %tmp188 to %struct.tree_type*		; <%struct.tree_type*> [#uses=1]
+	%tmp190 = getelementptr %struct.tree_type* %tmp189, i32 0, i32 6		; <i16*> [#uses=1]
+	%tmp190.upgrd.5 = bitcast i16* %tmp190 to i32*		; <i32*> [#uses=1]
+	%tmp191 = load i32* %tmp190.upgrd.5		; <i32> [#uses=1]
+	%tmp193 = lshr i32 %tmp191, 16		; <i32> [#uses=1]
+	%tmp193.mask = and i32 %tmp193, 127		; <i32> [#uses=1]
+	%gep.upgrd.6 = zext i32 %tmp193.mask to i64		; <i64> [#uses=1]
+	%tmp194 = getelementptr [35 x i8]* @mode_class, i32 0, i64 %gep.upgrd.6		; <i8*> [#uses=1]
+	%tmp195 = load i8* %tmp194		; <i8> [#uses=1]
+	%tmp196 = icmp eq i8 %tmp195, 4		; <i1> [#uses=1]
+	br i1 %tmp196, label %cond_next241, label %cond_true197
+cond_true197:		; preds = %cond_true184
+	ret void
+cond_next241:		; preds = %cond_true184, %cond_true158, %bb145
+	%tmp245 = load i32* null		; <i32> [#uses=0]
+	ret void
+bb276:		; preds = %entry
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/2006-10-19-UncondDiv.ll b/test/Transforms/SimplifyCFG/2006-10-19-UncondDiv.ll
new file mode 100644
index 0000000..009d1c8
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-10-19-UncondDiv.ll
@@ -0,0 +1,28 @@
+; PR957
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep select
+
+@G = extern_weak global i32
+
+define i32 @test(i32 %tmp) {
+cond_false179:
+	%tmp181 = icmp eq i32 %tmp, 0		; <i1> [#uses=1]
+	br i1 %tmp181, label %cond_true182, label %cond_next185
+cond_true182:		; preds = %cond_false179
+	br label %cond_next185
+cond_next185:		; preds = %cond_true182, %cond_false179
+	%d0.3 = phi i32 [ udiv (i32 1, i32 ptrtoint (i32* @G to i32)), %cond_true182 ], [ %tmp, %cond_false179 ]		; <i32> [#uses=1]
+	ret i32 %d0.3
+}
+
+define i32 @test2(i32 %tmp) {
+cond_false179:
+	%tmp181 = icmp eq i32 %tmp, 0		; <i1> [#uses=1]
+	br i1 %tmp181, label %cond_true182, label %cond_next185
+cond_true182:		; preds = %cond_false179
+	br label %cond_next185
+cond_next185:		; preds = %cond_true182, %cond_false179
+	%d0.3 = phi i32 [ udiv (i32 1, i32 ptrtoint (i32* @G to i32)), %cond_true182 ], [ %tmp, %cond_false179 ]		; <i32> [#uses=1]
+	call i32 @test( i32 4 )		; <i32>:0 [#uses=0]
+	ret i32 %d0.3
+}
diff --git a/test/Transforms/SimplifyCFG/2006-10-29-InvokeCrash.ll b/test/Transforms/SimplifyCFG/2006-10-29-InvokeCrash.ll
new file mode 100644
index 0000000..dba41c9
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-10-29-InvokeCrash.ll
@@ -0,0 +1,555 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; END.
+	%struct..4._102 = type { %struct.QVectorData* }
+	%struct..5._125 = type { %struct.QMapData* }
+	%struct.QAbstractTextDocumentLayout = type { %struct.QObject }
+	%struct.QBasicAtomic = type { i32 }
+	%struct.QFont = type { %struct.QFontPrivate*, i32 }
+	%struct.QFontMetrics = type { %struct.QFontPrivate* }
+	%struct.QFontPrivate = type opaque
+	%"struct.QFragmentMap<QTextBlockData>" = type { %struct.QFragmentMapData }
+	%struct.QFragmentMapData = type { %"struct.QFragmentMapData::._154", i32 }
+	%"struct.QFragmentMapData::._154" = type { %"struct.QFragmentMapData::Header"* }
+	%"struct.QFragmentMapData::Header" = type { i32, i32, i32, i32, i32, i32, i32, i32 }
+	%"struct.QHash<uint,QHashDummyValue>" = type { %"struct.QHash<uint,QHashDummyValue>::._152" }
+	%"struct.QHash<uint,QHashDummyValue>::._152" = type { %struct.QHashData* }
+	%struct.QHashData = type { %"struct.QHashData::Node"*, %"struct.QHashData::Node"**, %struct.QBasicAtomic, i32, i32, i16, i16, i32, i8 }
+	%"struct.QHashData::Node" = type { %"struct.QHashData::Node"*, i32 }
+	%"struct.QList<QObject*>::._92" = type { %struct.QListData }
+	%"struct.QList<QPointer<QObject> >" = type { %"struct.QList<QObject*>::._92" }
+	%struct.QListData = type { %"struct.QListData::Data"* }
+	%"struct.QListData::Data" = type { %struct.QBasicAtomic, i32, i32, i32, i8, [1 x i8*] }
+	%"struct.QMap<QUrl,QVariant>" = type { %struct..5._125 }
+	%struct.QMapData = type { %"struct.QMapData::Node"*, [12 x %"struct.QMapData::Node"*], %struct.QBasicAtomic, i32, i32, i32, i8 }
+	%"struct.QMapData::Node" = type { %"struct.QMapData::Node"*, [1 x %"struct.QMapData::Node"*] }
+	%struct.QObject = type { i32 (...)**, %struct.QObjectData* }
+	%struct.QObjectData = type { i32 (...)**, %struct.QObject*, %struct.QObject*, %"struct.QList<QPointer<QObject> >", i8, [3 x i8], i32, i32 }
+	%struct.QObjectPrivate = type { %struct.QObjectData, i32, %struct.QObject*, %"struct.QList<QPointer<QObject> >", %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %struct.QString }
+	%struct.QPaintDevice = type { i32 (...)**, i16 }
+	%struct.QPainter = type { %struct.QPainterPrivate* }
+	%struct.QPainterPrivate = type opaque
+	%struct.QPointF = type { double, double }
+	%struct.QPrinter = type { %struct.QPaintDevice, %struct.QPrinterPrivate* }
+	%struct.QPrinterPrivate = type opaque
+	%struct.QRectF = type { double, double, double, double }
+	%"struct.QSet<uint>" = type { %"struct.QHash<uint,QHashDummyValue>" }
+	%"struct.QSharedDataPointer<QTextFormatPrivate>" = type { %struct.QTextFormatPrivate* }
+	%struct.QString = type { %"struct.QString::Data"* }
+	%"struct.QString::Data" = type { %struct.QBasicAtomic, i32, i32, i16*, i8, i8, [1 x i16] }
+	%struct.QTextBlockFormat = type { %struct.QTextFormat }
+	%struct.QTextBlockGroup = type { %struct.QAbstractTextDocumentLayout }
+	%struct.QTextDocumentConfig = type { %struct.QString }
+	%struct.QTextDocumentPrivate = type { %struct.QObjectPrivate, %struct.QString, %"struct.QVector<QAbstractTextDocumentLayout::Selection>", i1, i32, i32, i1, i32, i32, i32, i32, i1, %struct.QTextFormatCollection, %struct.QTextBlockGroup*, %struct.QAbstractTextDocumentLayout*, %"struct.QFragmentMap<QTextBlockData>", %"struct.QFragmentMap<QTextBlockData>", i32, %"struct.QList<QPointer<QObject> >", %"struct.QList<QPointer<QObject> >", %"struct.QMap<QUrl,QVariant>", %"struct.QMap<QUrl,QVariant>", %"struct.QMap<QUrl,QVariant>", %struct.QTextDocumentConfig, i1, i1, %struct.QPointF }
+	%struct.QTextFormat = type { %"struct.QSharedDataPointer<QTextFormatPrivate>", i32 }
+	%struct.QTextFormatCollection = type { %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %"struct.QSet<uint>", %struct.QFont }
+	%struct.QTextFormatPrivate = type opaque
+	%"struct.QVector<QAbstractTextDocumentLayout::Selection>" = type { %struct..4._102 }
+	%struct.QVectorData = type { %struct.QBasicAtomic, i32, i32, i8 }
+
+define void @_ZNK13QTextDocument5printEP8QPrinter(%struct.QAbstractTextDocumentLayout* %this, %struct.QPrinter* %printer) {
+entry:
+	%tmp = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=2]
+	%tmp.upgrd.1 = alloca %struct.QRectF, align 16		; <%struct.QRectF*> [#uses=5]
+	%tmp2 = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=3]
+	%tmp.upgrd.2 = alloca %struct.QFontMetrics, align 16		; <%struct.QFontMetrics*> [#uses=4]
+	%tmp.upgrd.3 = alloca %struct.QFont, align 16		; <%struct.QFont*> [#uses=4]
+	%tmp3 = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=2]
+	%p = alloca %struct.QPainter, align 16		; <%struct.QPainter*> [#uses=14]
+	%body = alloca %struct.QRectF, align 16		; <%struct.QRectF*> [#uses=9]
+	%pageNumberPos = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=4]
+	%scaledPageSize = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=6]
+	%printerPageSize = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=3]
+	%fmt = alloca %struct.QTextBlockFormat, align 16		; <%struct.QTextBlockFormat*> [#uses=5]
+	%font = alloca %struct.QFont, align 16		; <%struct.QFont*> [#uses=5]
+	%tmp.upgrd.4 = call %struct.QTextDocumentPrivate* @_ZNK13QTextDocument6d_funcEv( %struct.QAbstractTextDocumentLayout* %this )		; <%struct.QTextDocumentPrivate*> [#uses=5]
+	%tmp.upgrd.5 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	call void @_ZN8QPainterC1EP12QPaintDevice( %struct.QPainter* %p, %struct.QPaintDevice* %tmp.upgrd.5 )
+	%tmp.upgrd.6 = invoke i1 @_ZNK8QPainter8isActiveEv( %struct.QPainter* %p )
+			to label %invcont unwind label %cleanup329		; <i1> [#uses=1]
+invcont:		; preds = %entry
+	br i1 %tmp.upgrd.6, label %cond_next, label %cleanup328
+cond_next:		; preds = %invcont
+	%tmp8 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %this )
+			to label %invcont7 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=0]
+invcont7:		; preds = %cond_next
+	%tmp10 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	call void @_ZN7QPointFC1Edd( %struct.QPointF* %tmp, double 0.000000e+00, double 0.000000e+00 )
+	call void @_ZN6QRectFC1ERK7QPointFRK6QSizeF( %struct.QRectF* %body, %struct.QPointF* %tmp, %struct.QPointF* %tmp10 )
+	call void @_ZN7QPointFC1Ev( %struct.QPointF* %pageNumberPos )
+	%tmp12 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	%tmp13 = call i1 @_ZNK6QSizeF7isValidEv( %struct.QPointF* %tmp12 )		; <i1> [#uses=1]
+	br i1 %tmp13, label %cond_next15, label %bb
+cond_next15:		; preds = %invcont7
+	%tmp17 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	%tmp.upgrd.7 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %tmp17 )		; <double> [#uses=1]
+	%tmp18 = fcmp oeq double %tmp.upgrd.7, 0x41DFFFFFFFC00000		; <i1> [#uses=1]
+	br i1 %tmp18, label %bb, label %cond_next20
+cond_next20:		; preds = %cond_next15
+	br label %bb21
+bb:		; preds = %cond_next15, %invcont7
+	br label %bb21
+bb21:		; preds = %bb, %cond_next20
+	%iftmp.406.0 = phi i1 [ false, %bb ], [ true, %cond_next20 ]		; <i1> [#uses=1]
+	br i1 %iftmp.406.0, label %cond_true24, label %cond_false
+cond_true24:		; preds = %bb21
+	%tmp.upgrd.8 = invoke i32 @_Z13qt_defaultDpiv( )
+			to label %invcont25 unwind label %cleanup329		; <i32> [#uses=1]
+invcont25:		; preds = %cond_true24
+	%tmp26 = sitofp i32 %tmp.upgrd.8 to double		; <double> [#uses=2]
+	%tmp30 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %this )
+			to label %invcont29 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=1]
+invcont29:		; preds = %invcont25
+	%tmp32 = invoke %struct.QPaintDevice* @_ZNK27QAbstractTextDocumentLayout11paintDeviceEv( %struct.QAbstractTextDocumentLayout* %tmp30 )
+			to label %invcont31 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=3]
+invcont31:		; preds = %invcont29
+	%tmp34 = icmp eq %struct.QPaintDevice* %tmp32, null		; <i1> [#uses=1]
+	br i1 %tmp34, label %cond_next42, label %cond_true35
+cond_true35:		; preds = %invcont31
+	%tmp38 = invoke i32 @_ZNK12QPaintDevice11logicalDpiXEv( %struct.QPaintDevice* %tmp32 )
+			to label %invcont37 unwind label %cleanup329		; <i32> [#uses=1]
+invcont37:		; preds = %cond_true35
+	%tmp38.upgrd.9 = sitofp i32 %tmp38 to double		; <double> [#uses=1]
+	%tmp41 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp32 )
+			to label %invcont40 unwind label %cleanup329		; <i32> [#uses=1]
+invcont40:		; preds = %invcont37
+	%tmp41.upgrd.10 = sitofp i32 %tmp41 to double		; <double> [#uses=1]
+	br label %cond_next42
+cond_next42:		; preds = %invcont40, %invcont31
+	%sourceDpiY.2 = phi double [ %tmp41.upgrd.10, %invcont40 ], [ %tmp26, %invcont31 ]		; <double> [#uses=1]
+	%sourceDpiX.2 = phi double [ %tmp38.upgrd.9, %invcont40 ], [ %tmp26, %invcont31 ]		; <double> [#uses=1]
+	%tmp44 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp46 = invoke i32 @_ZNK12QPaintDevice11logicalDpiXEv( %struct.QPaintDevice* %tmp44 )
+			to label %invcont45 unwind label %cleanup329		; <i32> [#uses=1]
+invcont45:		; preds = %cond_next42
+	%tmp46.upgrd.11 = sitofp i32 %tmp46 to double		; <double> [#uses=1]
+	%tmp48 = fdiv double %tmp46.upgrd.11, %sourceDpiX.2		; <double> [#uses=2]
+	%tmp50 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp52 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp50 )
+			to label %invcont51 unwind label %cleanup329		; <i32> [#uses=1]
+invcont51:		; preds = %invcont45
+	%tmp52.upgrd.12 = sitofp i32 %tmp52 to double		; <double> [#uses=1]
+	%tmp54 = fdiv double %tmp52.upgrd.12, %sourceDpiY.2		; <double> [#uses=2]
+	invoke void @_ZN8QPainter5scaleEdd( %struct.QPainter* %p, double %tmp48, double %tmp54 )
+			to label %invcont57 unwind label %cleanup329
+invcont57:		; preds = %invcont51
+	%tmp.upgrd.13 = getelementptr %struct.QPointF* %scaledPageSize, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp60 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26, i32 0		; <double*> [#uses=1]
+	%tmp61 = load double* %tmp60		; <double> [#uses=1]
+	store double %tmp61, double* %tmp.upgrd.13
+	%tmp62 = getelementptr %struct.QPointF* %scaledPageSize, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp63 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26, i32 1		; <double*> [#uses=1]
+	%tmp64 = load double* %tmp63		; <double> [#uses=1]
+	store double %tmp64, double* %tmp62
+	%tmp65 = call double* @_ZN6QSizeF6rwidthEv( %struct.QPointF* %scaledPageSize )		; <double*> [#uses=2]
+	%tmp67 = load double* %tmp65		; <double> [#uses=1]
+	%tmp69 = fmul double %tmp67, %tmp48		; <double> [#uses=1]
+	store double %tmp69, double* %tmp65
+	%tmp71 = call double* @_ZN6QSizeF7rheightEv( %struct.QPointF* %scaledPageSize )		; <double*> [#uses=2]
+	%tmp73 = load double* %tmp71		; <double> [#uses=1]
+	%tmp75 = fmul double %tmp73, %tmp54		; <double> [#uses=1]
+	store double %tmp75, double* %tmp71
+	%tmp78 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp80 = invoke i32 @_ZNK12QPaintDevice6heightEv( %struct.QPaintDevice* %tmp78 )
+			to label %invcont79 unwind label %cleanup329		; <i32> [#uses=1]
+invcont79:		; preds = %invcont57
+	%tmp82 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp84 = invoke i32 @_ZNK12QPaintDevice5widthEv( %struct.QPaintDevice* %tmp82 )
+			to label %invcont83 unwind label %cleanup329		; <i32> [#uses=1]
+invcont83:		; preds = %invcont79
+	%tmp80.upgrd.14 = sitofp i32 %tmp80 to double		; <double> [#uses=1]
+	%tmp84.upgrd.15 = sitofp i32 %tmp84 to double		; <double> [#uses=1]
+	call void @_ZN6QSizeFC1Edd( %struct.QPointF* %printerPageSize, double %tmp84.upgrd.15, double %tmp80.upgrd.14 )
+	%tmp85 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %printerPageSize )		; <double> [#uses=1]
+	%tmp86 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %scaledPageSize )		; <double> [#uses=1]
+	%tmp87 = fdiv double %tmp85, %tmp86		; <double> [#uses=1]
+	%tmp88 = call double @_ZNK6QSizeF5widthEv( %struct.QPointF* %printerPageSize )		; <double> [#uses=1]
+	%tmp89 = call double @_ZNK6QSizeF5widthEv( %struct.QPointF* %scaledPageSize )		; <double> [#uses=1]
+	%tmp90 = fdiv double %tmp88, %tmp89		; <double> [#uses=1]
+	invoke void @_ZN8QPainter5scaleEdd( %struct.QPainter* %p, double %tmp90, double %tmp87 )
+			to label %cond_next194 unwind label %cleanup329
+cond_false:		; preds = %bb21
+	%tmp.upgrd.16 = getelementptr %struct.QAbstractTextDocumentLayout* %this, i32 0, i32 0		; <%struct.QObject*> [#uses=1]
+	%tmp95 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument5cloneEP7QObject( %struct.QAbstractTextDocumentLayout* %this, %struct.QObject* %tmp.upgrd.16 )
+			to label %invcont94 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=9]
+invcont94:		; preds = %cond_false
+	%tmp99 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont98 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=1]
+invcont98:		; preds = %invcont94
+	%tmp101 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont100 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=1]
+invcont100:		; preds = %invcont98
+	invoke void @_ZN27QAbstractTextDocumentLayout14setPaintDeviceEP12QPaintDevice( %struct.QAbstractTextDocumentLayout* %tmp99, %struct.QPaintDevice* %tmp101 )
+			to label %invcont103 unwind label %cleanup329
+invcont103:		; preds = %invcont100
+	%tmp105 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont104 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=1]
+invcont104:		; preds = %invcont103
+	%tmp107 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp105 )
+			to label %invcont106 unwind label %cleanup329		; <i32> [#uses=1]
+invcont106:		; preds = %invcont104
+	%tmp108 = sitofp i32 %tmp107 to double		; <double> [#uses=1]
+	%tmp109 = fmul double %tmp108, 0x3FE93264C993264C		; <double> [#uses=1]
+	%tmp109.upgrd.17 = fptosi double %tmp109 to i32		; <i32> [#uses=3]
+	%tmp.upgrd.18 = call %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv( %struct.QAbstractTextDocumentLayout* %tmp95 )		; <%struct.QTextBlockGroup*> [#uses=1]
+	invoke void @_ZNK10QTextFrame11frameFormatEv( %struct.QTextBlockFormat* sret  %fmt, %struct.QTextBlockGroup* %tmp.upgrd.18 )
+			to label %invcont111 unwind label %cleanup329
+invcont111:		; preds = %invcont106
+	%tmp112 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	invoke void @_ZN16QTextFrameFormat9setMarginEd( %struct.QTextBlockFormat* %fmt, double %tmp112 )
+			to label %invcont114 unwind label %cleanup192
+invcont114:		; preds = %invcont111
+	%tmp116 = call %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv( %struct.QAbstractTextDocumentLayout* %tmp95 )		; <%struct.QTextBlockGroup*> [#uses=1]
+	invoke void @_ZN10QTextFrame14setFrameFormatERK16QTextFrameFormat( %struct.QTextBlockGroup* %tmp116, %struct.QTextBlockFormat* %fmt )
+			to label %invcont117 unwind label %cleanup192
+invcont117:		; preds = %invcont114
+	%tmp119 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont118 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont118:		; preds = %invcont117
+	%tmp121 = invoke i32 @_ZNK12QPaintDevice6heightEv( %struct.QPaintDevice* %tmp119 )
+			to label %invcont120 unwind label %cleanup192		; <i32> [#uses=1]
+invcont120:		; preds = %invcont118
+	%tmp121.upgrd.19 = sitofp i32 %tmp121 to double		; <double> [#uses=1]
+	%tmp123 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont122 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont122:		; preds = %invcont120
+	%tmp125 = invoke i32 @_ZNK12QPaintDevice5widthEv( %struct.QPaintDevice* %tmp123 )
+			to label %invcont124 unwind label %cleanup192		; <i32> [#uses=1]
+invcont124:		; preds = %invcont122
+	%tmp125.upgrd.20 = sitofp i32 %tmp125 to double		; <double> [#uses=1]
+	call void @_ZN6QRectFC1Edddd( %struct.QRectF* %tmp.upgrd.1, double 0.000000e+00, double 0.000000e+00, double %tmp125.upgrd.20, double %tmp121.upgrd.19 )
+	%tmp126 = getelementptr %struct.QRectF* %body, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp127 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp128 = load double* %tmp127		; <double> [#uses=1]
+	store double %tmp128, double* %tmp126
+	%tmp129 = getelementptr %struct.QRectF* %body, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp130 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp131 = load double* %tmp130		; <double> [#uses=1]
+	store double %tmp131, double* %tmp129
+	%tmp132 = getelementptr %struct.QRectF* %body, i32 0, i32 2		; <double*> [#uses=1]
+	%tmp133 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 2		; <double*> [#uses=1]
+	%tmp134 = load double* %tmp133		; <double> [#uses=1]
+	store double %tmp134, double* %tmp132
+	%tmp135 = getelementptr %struct.QRectF* %body, i32 0, i32 3		; <double*> [#uses=1]
+	%tmp136 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 3		; <double*> [#uses=1]
+	%tmp137 = load double* %tmp136		; <double> [#uses=1]
+	store double %tmp137, double* %tmp135
+	%tmp138 = call double @_ZNK6QRectF6heightEv( %struct.QRectF* %body )		; <double> [#uses=1]
+	%tmp139 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	%tmp140 = fsub double %tmp138, %tmp139		; <double> [#uses=1]
+	%tmp142 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont141 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont141:		; preds = %invcont124
+	invoke void @_ZNK13QTextDocument11defaultFontEv( %struct.QFont* sret  %tmp.upgrd.3, %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont144 unwind label %cleanup192
+invcont144:		; preds = %invcont141
+	invoke void @_ZN12QFontMetricsC1ERK5QFontP12QPaintDevice( %struct.QFontMetrics* %tmp.upgrd.2, %struct.QFont* %tmp.upgrd.3, %struct.QPaintDevice* %tmp142 )
+			to label %invcont146 unwind label %cleanup173
+invcont146:		; preds = %invcont144
+	%tmp149 = invoke i32 @_ZNK12QFontMetrics6ascentEv( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %invcont148 unwind label %cleanup168		; <i32> [#uses=1]
+invcont148:		; preds = %invcont146
+	%tmp149.upgrd.21 = sitofp i32 %tmp149 to double		; <double> [#uses=1]
+	%tmp150 = fadd double %tmp140, %tmp149.upgrd.21		; <double> [#uses=1]
+	%tmp152 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont151 unwind label %cleanup168		; <%struct.QPaintDevice*> [#uses=1]
+invcont151:		; preds = %invcont148
+	%tmp154 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp152 )
+			to label %invcont153 unwind label %cleanup168		; <i32> [#uses=1]
+invcont153:		; preds = %invcont151
+	%tmp155 = mul i32 %tmp154, 5		; <i32> [#uses=1]
+	%tmp156 = sdiv i32 %tmp155, 72		; <i32> [#uses=1]
+	%tmp156.upgrd.22 = sitofp i32 %tmp156 to double		; <double> [#uses=1]
+	%tmp157 = fadd double %tmp150, %tmp156.upgrd.22		; <double> [#uses=1]
+	%tmp158 = call double @_ZNK6QRectF5widthEv( %struct.QRectF* %body )		; <double> [#uses=1]
+	%tmp159 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	%tmp160 = fsub double %tmp158, %tmp159		; <double> [#uses=1]
+	call void @_ZN7QPointFC1Edd( %struct.QPointF* %tmp2, double %tmp160, double %tmp157 )
+	%tmp161 = getelementptr %struct.QPointF* %pageNumberPos, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp162 = getelementptr %struct.QPointF* %tmp2, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp163 = load double* %tmp162		; <double> [#uses=1]
+	store double %tmp163, double* %tmp161
+	%tmp164 = getelementptr %struct.QPointF* %pageNumberPos, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp165 = getelementptr %struct.QPointF* %tmp2, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp166 = load double* %tmp165		; <double> [#uses=1]
+	store double %tmp166, double* %tmp164
+	invoke void @_ZN12QFontMetricsD1Ev( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %cleanup171 unwind label %cleanup173
+cleanup168:		; preds = %invcont151, %invcont148, %invcont146
+	invoke void @_ZN12QFontMetricsD1Ev( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %cleanup173 unwind label %cleanup173
+cleanup171:		; preds = %invcont153
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %tmp.upgrd.3 )
+			to label %finally170 unwind label %cleanup192
+cleanup173:		; preds = %cleanup168, %cleanup168, %invcont153, %invcont144
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %tmp.upgrd.3 )
+			to label %cleanup192 unwind label %cleanup192
+finally170:		; preds = %cleanup171
+	invoke void @_ZNK13QTextDocument11defaultFontEv( %struct.QFont* sret  %font, %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont177 unwind label %cleanup192
+invcont177:		; preds = %finally170
+	invoke void @_ZN5QFont12setPointSizeEi( %struct.QFont* %font, i32 10 )
+			to label %invcont179 unwind label %cleanup187
+invcont179:		; preds = %invcont177
+	invoke void @_ZN13QTextDocument14setDefaultFontERK5QFont( %struct.QAbstractTextDocumentLayout* %tmp95, %struct.QFont* %font )
+			to label %invcont181 unwind label %cleanup187
+invcont181:		; preds = %invcont179
+	call void @_ZNK6QRectF4sizeEv( %struct.QPointF* sret  %tmp3, %struct.QRectF* %body )
+	invoke void @_ZN13QTextDocument11setPageSizeERK6QSizeF( %struct.QAbstractTextDocumentLayout* %tmp95, %struct.QPointF* %tmp3 )
+			to label %cleanup185 unwind label %cleanup187
+cleanup185:		; preds = %invcont181
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %font )
+			to label %cleanup190 unwind label %cleanup192
+cleanup187:		; preds = %invcont181, %invcont179, %invcont177
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %font )
+			to label %cleanup192 unwind label %cleanup192
+cleanup190:		; preds = %cleanup185
+	invoke void @_ZN16QTextFrameFormatD1Ev( %struct.QTextBlockFormat* %fmt )
+			to label %cond_next194 unwind label %cleanup329
+cleanup192:		; preds = %cleanup187, %cleanup187, %cleanup185, %finally170, %cleanup173, %cleanup173, %cleanup171, %invcont141, %invcont124, %invcont122, %invcont120, %invcont118, %invcont117, %invcont114, %invcont111
+	invoke void @_ZN16QTextFrameFormatD1Ev( %struct.QTextBlockFormat* %fmt )
+			to label %cleanup329 unwind label %cleanup329
+cond_next194:		; preds = %cleanup190, %invcont83
+	%clonedDoc.1 = phi %struct.QAbstractTextDocumentLayout* [ null, %invcont83 ], [ %tmp95, %cleanup190 ]		; <%struct.QAbstractTextDocumentLayout*> [#uses=3]
+	%doc.1 = phi %struct.QAbstractTextDocumentLayout* [ %this, %invcont83 ], [ %tmp95, %cleanup190 ]		; <%struct.QAbstractTextDocumentLayout*> [#uses=2]
+	%tmp197 = invoke i1 @_ZNK8QPrinter13collateCopiesEv( %struct.QPrinter* %printer )
+			to label %invcont196 unwind label %cleanup329		; <i1> [#uses=1]
+invcont196:		; preds = %cond_next194
+	br i1 %tmp197, label %cond_true200, label %cond_false204
+cond_true200:		; preds = %invcont196
+	%tmp203 = invoke i32 @_ZNK8QPrinter9numCopiesEv( %struct.QPrinter* %printer )
+			to label %invcont202 unwind label %cleanup329		; <i32> [#uses=1]
+invcont202:		; preds = %cond_true200
+	br label %cond_next208
+cond_false204:		; preds = %invcont196
+	%tmp207 = invoke i32 @_ZNK8QPrinter9numCopiesEv( %struct.QPrinter* %printer )
+			to label %invcont206 unwind label %cleanup329		; <i32> [#uses=1]
+invcont206:		; preds = %cond_false204
+	br label %cond_next208
+cond_next208:		; preds = %invcont206, %invcont202
+	%pageCopies.0 = phi i32 [ %tmp203, %invcont202 ], [ 1, %invcont206 ]		; <i32> [#uses=2]
+	%docCopies.0 = phi i32 [ 1, %invcont202 ], [ %tmp207, %invcont206 ]		; <i32> [#uses=2]
+	%tmp211 = invoke i32 @_ZNK8QPrinter8fromPageEv( %struct.QPrinter* %printer )
+			to label %invcont210 unwind label %cleanup329		; <i32> [#uses=3]
+invcont210:		; preds = %cond_next208
+	%tmp214 = invoke i32 @_ZNK8QPrinter6toPageEv( %struct.QPrinter* %printer )
+			to label %invcont213 unwind label %cleanup329		; <i32> [#uses=3]
+invcont213:		; preds = %invcont210
+	%tmp216 = icmp eq i32 %tmp211, 0		; <i1> [#uses=1]
+	br i1 %tmp216, label %cond_true217, label %cond_next225
+cond_true217:		; preds = %invcont213
+	%tmp219 = icmp eq i32 %tmp214, 0		; <i1> [#uses=1]
+	br i1 %tmp219, label %cond_true220, label %cond_next225
+cond_true220:		; preds = %cond_true217
+	%tmp223 = invoke i32 @_ZNK13QTextDocument9pageCountEv( %struct.QAbstractTextDocumentLayout* %doc.1 )
+			to label %invcont222 unwind label %cleanup329		; <i32> [#uses=1]
+invcont222:		; preds = %cond_true220
+	br label %cond_next225
+cond_next225:		; preds = %invcont222, %cond_true217, %invcont213
+	%toPage.1 = phi i32 [ %tmp223, %invcont222 ], [ %tmp214, %cond_true217 ], [ %tmp214, %invcont213 ]		; <i32> [#uses=2]
+	%fromPage.1 = phi i32 [ 1, %invcont222 ], [ %tmp211, %cond_true217 ], [ %tmp211, %invcont213 ]		; <i32> [#uses=2]
+	%tmp.page = invoke i32 @_ZNK8QPrinter9pageOrderEv( %struct.QPrinter* %printer )
+			to label %invcont227 unwind label %cleanup329		; <i32> [#uses=1]
+invcont227:		; preds = %cond_next225
+	%tmp228 = icmp eq i32 %tmp.page, 1		; <i1> [#uses=1]
+	br i1 %tmp228, label %cond_true230, label %cond_next234
+cond_true230:		; preds = %invcont227
+	br label %cond_next234
+cond_next234:		; preds = %cond_true230, %invcont227
+	%ascending.1 = phi i1 [ false, %cond_true230 ], [ true, %invcont227 ]		; <i1> [#uses=1]
+	%toPage.2 = phi i32 [ %fromPage.1, %cond_true230 ], [ %toPage.1, %invcont227 ]		; <i32> [#uses=1]
+	%fromPage.2 = phi i32 [ %toPage.1, %cond_true230 ], [ %fromPage.1, %invcont227 ]		; <i32> [#uses=1]
+	br label %bb309
+bb237:		; preds = %cond_true313, %cond_next293
+	%iftmp.410.4 = phi i1 [ %iftmp.410.5, %cond_true313 ], [ %iftmp.410.1, %cond_next293 ]		; <i1> [#uses=1]
+	%page.4 = phi i32 [ %fromPage.2, %cond_true313 ], [ %page.3, %cond_next293 ]		; <i32> [#uses=4]
+	br label %bb273
+invcont240:		; preds = %cond_true277
+	%tmp242 = icmp eq i32 %tmp241, 2		; <i1> [#uses=1]
+	br i1 %tmp242, label %bb252, label %cond_next244
+cond_next244:		; preds = %invcont240
+	%tmp247 = invoke i32 @_ZNK8QPrinter12printerStateEv( %struct.QPrinter* %printer )
+			to label %invcont246 unwind label %cleanup329		; <i32> [#uses=1]
+invcont246:		; preds = %cond_next244
+	%tmp248 = icmp eq i32 %tmp247, 3		; <i1> [#uses=1]
+	br i1 %tmp248, label %bb252, label %bb253
+bb252:		; preds = %invcont246, %invcont240
+	br label %bb254
+bb253:		; preds = %invcont246
+	br label %bb254
+bb254:		; preds = %bb253, %bb252
+	%iftmp.410.0 = phi i1 [ true, %bb252 ], [ false, %bb253 ]		; <i1> [#uses=2]
+	br i1 %iftmp.410.0, label %UserCanceled, label %cond_next258
+cond_next258:		; preds = %bb254
+	invoke fastcc void @_Z9printPageiP8QPainterPK13QTextDocumentRK6QRectFRK7QPointF( i32 %page.4, %struct.QPainter* %p, %struct.QAbstractTextDocumentLayout* %doc.1, %struct.QRectF* %body, %struct.QPointF* %pageNumberPos )
+			to label %invcont261 unwind label %cleanup329
+invcont261:		; preds = %cond_next258
+	%tmp263 = add i32 %pageCopies.0, -1		; <i32> [#uses=1]
+	%tmp265 = icmp sgt i32 %tmp263, %j.4		; <i1> [#uses=1]
+	br i1 %tmp265, label %cond_true266, label %cond_next270
+cond_true266:		; preds = %invcont261
+	%tmp269 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %cond_next270 unwind label %cleanup329		; <i1> [#uses=0]
+cond_next270:		; preds = %cond_true266, %invcont261
+	%tmp272 = add i32 %j.4, 1		; <i32> [#uses=1]
+	br label %bb273
+bb273:		; preds = %cond_next270, %bb237
+	%iftmp.410.1 = phi i1 [ %iftmp.410.4, %bb237 ], [ %iftmp.410.0, %cond_next270 ]		; <i1> [#uses=2]
+	%j.4 = phi i32 [ 0, %bb237 ], [ %tmp272, %cond_next270 ]		; <i32> [#uses=3]
+	%tmp276 = icmp slt i32 %j.4, %pageCopies.0		; <i1> [#uses=1]
+	br i1 %tmp276, label %cond_true277, label %bb280
+cond_true277:		; preds = %bb273
+	%tmp241 = invoke i32 @_ZNK8QPrinter12printerStateEv( %struct.QPrinter* %printer )
+			to label %invcont240 unwind label %cleanup329		; <i32> [#uses=1]
+bb280:		; preds = %bb273
+	%tmp283 = icmp eq i32 %page.4, %toPage.2		; <i1> [#uses=1]
+	br i1 %tmp283, label %bb297, label %cond_next285
+cond_next285:		; preds = %bb280
+	br i1 %ascending.1, label %cond_true287, label %cond_false290
+cond_true287:		; preds = %cond_next285
+	%tmp289 = add i32 %page.4, 1		; <i32> [#uses=1]
+	br label %cond_next293
+cond_false290:		; preds = %cond_next285
+	%tmp292 = add i32 %page.4, -1		; <i32> [#uses=1]
+	br label %cond_next293
+cond_next293:		; preds = %cond_false290, %cond_true287
+	%page.3 = phi i32 [ %tmp289, %cond_true287 ], [ %tmp292, %cond_false290 ]		; <i32> [#uses=1]
+	%tmp296 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %bb237 unwind label %cleanup329		; <i1> [#uses=0]
+bb297:		; preds = %bb280
+	%tmp299 = add i32 %docCopies.0, -1		; <i32> [#uses=1]
+	%tmp301 = icmp sgt i32 %tmp299, %i.1		; <i1> [#uses=1]
+	br i1 %tmp301, label %cond_true302, label %cond_next306
+cond_true302:		; preds = %bb297
+	%tmp305 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %cond_next306 unwind label %cleanup329		; <i1> [#uses=0]
+cond_next306:		; preds = %cond_true302, %bb297
+	%tmp308 = add i32 %i.1, 1		; <i32> [#uses=1]
+	br label %bb309
+bb309:		; preds = %cond_next306, %cond_next234
+	%iftmp.410.5 = phi i1 [ undef, %cond_next234 ], [ %iftmp.410.1, %cond_next306 ]		; <i1> [#uses=1]
+	%i.1 = phi i32 [ 0, %cond_next234 ], [ %tmp308, %cond_next306 ]		; <i32> [#uses=3]
+	%tmp312 = icmp slt i32 %i.1, %docCopies.0		; <i1> [#uses=1]
+	br i1 %tmp312, label %cond_true313, label %UserCanceled
+cond_true313:		; preds = %bb309
+	br label %bb237
+UserCanceled:		; preds = %bb309, %bb254
+	%tmp318 = icmp eq %struct.QAbstractTextDocumentLayout* %clonedDoc.1, null		; <i1> [#uses=1]
+	br i1 %tmp318, label %cleanup327, label %cond_true319
+cond_true319:		; preds = %UserCanceled
+	%tmp.upgrd.23 = getelementptr %struct.QAbstractTextDocumentLayout* %clonedDoc.1, i32 0, i32 0, i32 0		; <i32 (...)***> [#uses=1]
+	%tmp.upgrd.24 = load i32 (...)*** %tmp.upgrd.23		; <i32 (...)**> [#uses=1]
+	%tmp322 = getelementptr i32 (...)** %tmp.upgrd.24, i32 4		; <i32 (...)**> [#uses=1]
+	%tmp.upgrd.25 = load i32 (...)** %tmp322		; <i32 (...)*> [#uses=1]
+	%tmp.upgrd.26 = bitcast i32 (...)* %tmp.upgrd.25 to void (%struct.QAbstractTextDocumentLayout*)*		; <void (%struct.QAbstractTextDocumentLayout*)*> [#uses=1]
+	invoke void %tmp.upgrd.26( %struct.QAbstractTextDocumentLayout* %clonedDoc.1 )
+			to label %cleanup327 unwind label %cleanup329
+cleanup327:		; preds = %cond_true319, %UserCanceled
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	ret void
+cleanup328:		; preds = %invcont
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	ret void
+cleanup329:		; preds = %cond_true319, %cond_true302, %cond_next293, %cond_true277, %cond_true266, %cond_next258, %cond_next244, %cond_next225, %cond_true220, %invcont210, %cond_next208, %cond_false204, %cond_true200, %cond_next194, %cleanup192, %cleanup192, %cleanup190, %invcont106, %invcont104, %invcont103, %invcont100, %invcont98, %invcont94, %cond_false, %invcont83, %invcont79, %invcont57, %invcont51, %invcont45, %cond_next42, %invcont37, %cond_true35, %invcont29, %invcont25, %cond_true24, %cond_next, %entry
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	unwind
+}
+
+declare void @_ZN6QSizeFC1Edd(%struct.QPointF*, double, double)
+
+declare i1 @_ZNK6QSizeF7isValidEv(%struct.QPointF*)
+
+declare double @_ZNK6QSizeF5widthEv(%struct.QPointF*)
+
+declare double @_ZNK6QSizeF6heightEv(%struct.QPointF*)
+
+declare double* @_ZN6QSizeF6rwidthEv(%struct.QPointF*)
+
+declare double* @_ZN6QSizeF7rheightEv(%struct.QPointF*)
+
+declare %struct.QTextDocumentPrivate* @_ZNK13QTextDocument6d_funcEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN7QPointFC1Ev(%struct.QPointF*)
+
+declare void @_ZN7QPointFC1Edd(%struct.QPointF*, double, double)
+
+declare void @_ZN16QTextFrameFormat9setMarginEd(%struct.QTextBlockFormat*, double)
+
+declare void @_ZN6QRectFC1Edddd(%struct.QRectF*, double, double, double, double)
+
+declare void @_ZN6QRectFC1ERK7QPointFRK6QSizeF(%struct.QRectF*, %struct.QPointF*, %struct.QPointF*)
+
+declare double @_ZNK6QRectF5widthEv(%struct.QRectF*)
+
+declare double @_ZNK6QRectF6heightEv(%struct.QRectF*)
+
+declare void @_ZNK6QRectF4sizeEv(%struct.QPointF*, %struct.QRectF*)
+
+declare void @_ZN16QTextFrameFormatD1Ev(%struct.QTextBlockFormat*)
+
+declare void @_ZNK10QTextFrame11frameFormatEv(%struct.QTextBlockFormat*, %struct.QTextBlockGroup*)
+
+declare void @_ZN10QTextFrame14setFrameFormatERK16QTextFrameFormat(%struct.QTextBlockGroup*, %struct.QTextBlockFormat*)
+
+declare i32 @_ZNK12QPaintDevice5widthEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice6heightEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice11logicalDpiXEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice11logicalDpiYEv(%struct.QPaintDevice*)
+
+declare %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument5cloneEP7QObject(%struct.QAbstractTextDocumentLayout*, %struct.QObject*)
+
+declare void @_ZN5QFontD1Ev(%struct.QFont*)
+
+declare %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv(%struct.QAbstractTextDocumentLayout*)
+
+declare %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv(%struct.QAbstractTextDocumentLayout*)
+
+declare i32 @_ZNK13QTextDocument9pageCountEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZNK13QTextDocument11defaultFontEv(%struct.QFont*, %struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN13QTextDocument14setDefaultFontERK5QFont(%struct.QAbstractTextDocumentLayout*, %struct.QFont*)
+
+declare void @_ZN13QTextDocument11setPageSizeERK6QSizeF(%struct.QAbstractTextDocumentLayout*, %struct.QPointF*)
+
+declare void @_Z9printPageiP8QPainterPK13QTextDocumentRK6QRectFRK7QPointF(i32, %struct.QPainter*, %struct.QAbstractTextDocumentLayout*, %struct.QRectF*, %struct.QPointF*)
+
+declare void @_ZN12QFontMetricsD1Ev(%struct.QFontMetrics*)
+
+declare void @_ZN8QPainterC1EP12QPaintDevice(%struct.QPainter*, %struct.QPaintDevice*)
+
+declare i1 @_ZNK8QPainter8isActiveEv(%struct.QPainter*)
+
+declare i32 @_Z13qt_defaultDpiv()
+
+declare %struct.QPaintDevice* @_ZNK27QAbstractTextDocumentLayout11paintDeviceEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN8QPainter5scaleEdd(%struct.QPainter*, double, double)
+
+declare %struct.QPaintDevice* @_ZNK8QPainter6deviceEv(%struct.QPainter*)
+
+declare void @_ZN27QAbstractTextDocumentLayout14setPaintDeviceEP12QPaintDevice(%struct.QAbstractTextDocumentLayout*, %struct.QPaintDevice*)
+
+declare void @_ZN12QFontMetricsC1ERK5QFontP12QPaintDevice(%struct.QFontMetrics*, %struct.QFont*, %struct.QPaintDevice*)
+
+declare i32 @_ZNK12QFontMetrics6ascentEv(%struct.QFontMetrics*)
+
+declare void @_ZN5QFont12setPointSizeEi(%struct.QFont*, i32)
+
+declare i1 @_ZNK8QPrinter13collateCopiesEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter9numCopiesEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter8fromPageEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter6toPageEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter9pageOrderEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter12printerStateEv(%struct.QPrinter*)
+
+declare i1 @_ZN8QPrinter7newPageEv(%struct.QPrinter*)
+
+declare void @_ZN8QPainterD1Ev(%struct.QPainter*)
diff --git a/test/Transforms/SimplifyCFG/2006-12-08-Ptr-ICmp-Branch.ll b/test/Transforms/SimplifyCFG/2006-12-08-Ptr-ICmp-Branch.ll
new file mode 100644
index 0000000..af865ce
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-12-08-Ptr-ICmp-Branch.ll
@@ -0,0 +1,131 @@
+; RUN: opt < %s -simplifycfg | llvm-dis
+; END.
+
+; ModuleID = '2006-12-08-Ptr-ICmp-Branch.ll'
+target datalayout = "e-p:32:32"
+target triple = "i686-pc-linux-gnu"
+	%struct.FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct.FILE*, i32, i32, i32, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i32, i32, [40 x i8] }
+	%struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct.FILE*, i32, i32, i32, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i32, i32, [40 x i8] }
+	%struct._IO_marker = type { %struct._IO_marker*, %struct.FILE*, i32 }
+	%struct.charsequence = type { i8*, i32, i32 }
+	%struct.trie_s = type { [26 x %struct.trie_s*], i32 }
+@str = external global [14 x i8]		; <[14 x i8]*> [#uses=0]
+@str.upgrd.1 = external global [32 x i8]		; <[32 x i8]*> [#uses=0]
+@str.upgrd.2 = external global [12 x i8]		; <[12 x i8]*> [#uses=0]
+@C.0.2294 = external global %struct.charsequence		; <%struct.charsequence*> [#uses=3]
+@t = external global %struct.trie_s*		; <%struct.trie_s**> [#uses=0]
+@str.upgrd.3 = external global [3 x i8]		; <[3 x i8]*> [#uses=0]
+@str.upgrd.4 = external global [26 x i8]		; <[26 x i8]*> [#uses=0]
+
+declare void @charsequence_reset(%struct.charsequence*)
+
+declare void @free(i8*)
+
+declare void @charsequence_push(%struct.charsequence*, i8)
+
+declare i8* @charsequence_val(%struct.charsequence*)
+
+declare i32 @_IO_getc(%struct.FILE*)
+
+declare i32 @tolower(i32)
+
+declare %struct.trie_s* @trie_insert(%struct.trie_s*, i8*)
+
+declare i32 @feof(%struct.FILE*)
+
+define void @addfile(%struct.trie_s* %t, %struct.FILE* %f) {
+entry:
+	%t_addr = alloca %struct.trie_s*		; <%struct.trie_s**> [#uses=2]
+	%f_addr = alloca %struct.FILE*		; <%struct.FILE**> [#uses=3]
+	%c = alloca i8, align 1		; <i8*> [#uses=7]
+	%wstate = alloca i32, align 4		; <i32*> [#uses=4]
+	%cs = alloca %struct.charsequence, align 16		; <%struct.charsequence*> [#uses=7]
+	%str = alloca i8*, align 4		; <i8**> [#uses=3]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	store %struct.trie_s* %t, %struct.trie_s** %t_addr
+	store %struct.FILE* %f, %struct.FILE** %f_addr
+	store i32 0, i32* %wstate
+	%tmp = getelementptr %struct.charsequence* %cs, i64 0, i32 0		; <i8**> [#uses=1]
+	%tmp1 = getelementptr %struct.charsequence* @C.0.2294, i64 0, i32 0		; <i8**> [#uses=1]
+	%tmp.upgrd.5 = load i8** %tmp1		; <i8*> [#uses=1]
+	store i8* %tmp.upgrd.5, i8** %tmp
+	%tmp.upgrd.6 = getelementptr %struct.charsequence* %cs, i64 0, i32 1		; <i32*> [#uses=1]
+	%tmp2 = getelementptr %struct.charsequence* @C.0.2294, i64 0, i32 1		; <i32*> [#uses=1]
+	%tmp.upgrd.7 = load i32* %tmp2		; <i32> [#uses=1]
+	store i32 %tmp.upgrd.7, i32* %tmp.upgrd.6
+	%tmp3 = getelementptr %struct.charsequence* %cs, i64 0, i32 2		; <i32*> [#uses=1]
+	%tmp4 = getelementptr %struct.charsequence* @C.0.2294, i64 0, i32 2		; <i32*> [#uses=1]
+	%tmp5 = load i32* %tmp4		; <i32> [#uses=1]
+	store i32 %tmp5, i32* %tmp3
+	br label %bb33
+bb:		; preds = %bb33
+	%tmp.upgrd.8 = load %struct.FILE** %f_addr		; <%struct.FILE*> [#uses=1]
+	%tmp.upgrd.9 = call i32 @_IO_getc( %struct.FILE* %tmp.upgrd.8 )		; <i32> [#uses=1]
+	%tmp6 = call i32 @tolower( i32 %tmp.upgrd.9 )		; <i32> [#uses=1]
+	%tmp6.upgrd.10 = trunc i32 %tmp6 to i8		; <i8> [#uses=1]
+	store i8 %tmp6.upgrd.10, i8* %c
+	%tmp7 = load i32* %wstate		; <i32> [#uses=1]
+	%tmp.upgrd.11 = icmp ne i32 %tmp7, 0		; <i1> [#uses=1]
+	br i1 %tmp.upgrd.11, label %cond_true, label %cond_false
+cond_true:		; preds = %bb
+	%tmp.upgrd.12 = load i8* %c		; <i8> [#uses=1]
+	%tmp8 = icmp sle i8 %tmp.upgrd.12, 96		; <i1> [#uses=1]
+	br i1 %tmp8, label %cond_true9, label %cond_next
+cond_true9:		; preds = %cond_true
+	br label %bb16
+cond_next:		; preds = %cond_true
+	%tmp10 = load i8* %c		; <i8> [#uses=1]
+	%tmp11 = icmp sgt i8 %tmp10, 122		; <i1> [#uses=1]
+	br i1 %tmp11, label %cond_true12, label %cond_next13
+cond_true12:		; preds = %cond_next
+	br label %bb16
+cond_next13:		; preds = %cond_next
+	%tmp14 = load i8* %c		; <i8> [#uses=1]
+	%tmp14.upgrd.13 = sext i8 %tmp14 to i32		; <i32> [#uses=1]
+	%tmp1415 = trunc i32 %tmp14.upgrd.13 to i8		; <i8> [#uses=1]
+	call void @charsequence_push( %struct.charsequence* %cs, i8 %tmp1415 )
+	br label %bb21
+bb16:		; preds = %cond_true12, %cond_true9
+	%tmp17 = call i8* @charsequence_val( %struct.charsequence* %cs )		; <i8*> [#uses=1]
+	store i8* %tmp17, i8** %str
+	%tmp.upgrd.14 = load %struct.trie_s** %t_addr		; <%struct.trie_s*> [#uses=1]
+	%tmp18 = load i8** %str		; <i8*> [#uses=1]
+	%tmp19 = call %struct.trie_s* @trie_insert( %struct.trie_s* %tmp.upgrd.14, i8* %tmp18 )		; <%struct.trie_s*> [#uses=0]
+	%tmp20 = load i8** %str		; <i8*> [#uses=1]
+	call void @free( i8* %tmp20 )
+	store i32 0, i32* %wstate
+	br label %bb21
+bb21:		; preds = %bb16, %cond_next13
+	br label %cond_next32
+cond_false:		; preds = %bb
+	%tmp22 = load i8* %c		; <i8> [#uses=1]
+	%tmp23 = icmp sgt i8 %tmp22, 96		; <i1> [#uses=1]
+	br i1 %tmp23, label %cond_true24, label %cond_next31
+cond_true24:		; preds = %cond_false
+	%tmp25 = load i8* %c		; <i8> [#uses=1]
+	%tmp26 = icmp sle i8 %tmp25, 122		; <i1> [#uses=1]
+	br i1 %tmp26, label %cond_true27, label %cond_next30
+cond_true27:		; preds = %cond_true24
+	call void @charsequence_reset( %struct.charsequence* %cs )
+	%tmp28 = load i8* %c		; <i8> [#uses=1]
+	%tmp28.upgrd.15 = sext i8 %tmp28 to i32		; <i32> [#uses=1]
+	%tmp2829 = trunc i32 %tmp28.upgrd.15 to i8		; <i8> [#uses=1]
+	call void @charsequence_push( %struct.charsequence* %cs, i8 %tmp2829 )
+	store i32 1, i32* %wstate
+	br label %cond_next30
+cond_next30:		; preds = %cond_true27, %cond_true24
+	br label %cond_next31
+cond_next31:		; preds = %cond_next30, %cond_false
+	br label %cond_next32
+cond_next32:		; preds = %cond_next31, %bb21
+	br label %bb33
+bb33:		; preds = %cond_next32, %entry
+	%tmp34 = load %struct.FILE** %f_addr		; <%struct.FILE*> [#uses=1]
+	%tmp35 = call i32 @feof( %struct.FILE* %tmp34 )		; <i32> [#uses=1]
+	%tmp36 = icmp eq i32 %tmp35, 0		; <i1> [#uses=1]
+	br i1 %tmp36, label %bb, label %bb37
+bb37:		; preds = %bb33
+	br label %return
+return:		; preds = %bb37
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/2007-11-22-InvokeNoUnwind.ll b/test/Transforms/SimplifyCFG/2007-11-22-InvokeNoUnwind.ll
new file mode 100644
index 0000000..a20c46e
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2007-11-22-InvokeNoUnwind.ll
@@ -0,0 +1,14 @@
+; RUN: opt < %s -simplifycfg -S | not grep invoke
+
+declare i32 @func(i8*) nounwind
+
+define i32 @test() {
+	invoke i32 @func( i8* null )
+			to label %Cont unwind label %Other		; <i32>:1 [#uses=0]
+
+Cont:		; preds = %0
+	ret i32 0
+
+Other:		; preds = %0
+	ret i32 1
+}
diff --git a/test/Transforms/SimplifyCFG/2007-12-21-Crash.ll b/test/Transforms/SimplifyCFG/2007-12-21-Crash.ll
new file mode 100644
index 0000000..46df0f0
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2007-12-21-Crash.ll
@@ -0,0 +1,37 @@
+;RUN: opt < %s -simplifycfg -disable-output
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+
+define i32 @bork() nounwind  {
+entry:
+	br label %bb5.outer
+
+bb5.outer.loopexit:		; preds = %bb5
+	br label %bb5.outer
+
+bb5.outer:		; preds = %bb5.outer.loopexit, %entry
+	%undo.0.ph = phi i32 [ 0, %entry ], [ 1, %bb5.outer.loopexit ]		; <i32> [#uses=1]
+	br label %bb5
+
+bb5:		; preds = %bb5, %bb5.outer
+	%tmp6 = tail call i32 (...)* @foo( ) nounwind 		; <i32> [#uses=1]
+	switch i32 %tmp6, label %bb13 [
+		 i32 -1, label %bb10
+		 i32 102, label %bb5
+		 i32 110, label %bb5.outer.loopexit
+	]
+
+bb10:		; preds = %bb5
+	%tmp12 = tail call i32 (...)* @bar( i32 %undo.0.ph ) nounwind 		; <i32> [#uses=0]
+	br label %UnifiedReturnBlock
+
+bb13:		; preds = %bb5
+	br label %UnifiedReturnBlock
+
+UnifiedReturnBlock:		; preds = %bb13, %bb10
+	%UnifiedRetVal = phi i32 [ 1, %bb10 ], [ 258, %bb13 ]		; <i32> [#uses=1]
+	ret i32 %UnifiedRetVal
+}
+
+declare i32 @foo(...)
+
+declare i32 @bar(...)
diff --git a/test/Transforms/SimplifyCFG/2008-01-02-hoist-fp-add.ll b/test/Transforms/SimplifyCFG/2008-01-02-hoist-fp-add.ll
new file mode 100644
index 0000000..00f2d5b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-01-02-hoist-fp-add.ll
@@ -0,0 +1,26 @@
+; The phi should not be eliminated in this case, because the fp op could trap.
+; RUN: opt < %s -simplifycfg -S | grep {= phi double}
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-apple-darwin8"
+@G = weak global double 0.000000e+00, align 8		; <double*> [#uses=2]
+
+define void @test(i32 %X, i32 %Y, double %Z) {
+entry:
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	%tmp = load double* @G, align 8		; <double> [#uses=2]
+	%tmp3 = icmp eq i32 %X, %Y		; <i1> [#uses=1]
+	%tmp34 = zext i1 %tmp3 to i8		; <i8> [#uses=1]
+	%toBool = icmp ne i8 %tmp34, 0		; <i1> [#uses=1]
+	br i1 %toBool, label %cond_true, label %cond_next
+
+cond_true:		; preds = %entry
+	%tmp7 = fadd double %tmp, %Z		; <double> [#uses=1]
+	br label %cond_next
+
+cond_next:		; preds = %cond_true, %entry
+	%F.0 = phi double [ %tmp, %entry ], [ %tmp7, %cond_true ]		; <double> [#uses=1]
+	store double %F.0, double* @G, align 8
+	ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/2008-04-23-MergeMultipleResultRet.ll b/test/Transforms/SimplifyCFG/2008-04-23-MergeMultipleResultRet.ll
new file mode 100644
index 0000000..8e05a3c
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-04-23-MergeMultipleResultRet.ll
@@ -0,0 +1,43 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; rdar://5882392
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-apple-darwin9"
+	%struct.Py_complex = type { double, double }
+
+define %struct.Py_complex @_Py_c_pow(double %a.0, double %a.1, double %b.0, double %b.1) nounwind  {
+entry:
+	%tmp7 = fcmp une double %b.0, 0.000000e+00		; <i1> [#uses=1]
+	%tmp11 = fcmp une double %b.1, 0.000000e+00		; <i1> [#uses=1]
+	%bothcond = or i1 %tmp7, %tmp11		; <i1> [#uses=1]
+	br i1 %bothcond, label %bb15, label %bb53
+
+bb15:		; preds = %entry
+	%tmp18 = fcmp une double %a.0, 0.000000e+00		; <i1> [#uses=1]
+	%tmp24 = fcmp une double %a.1, 0.000000e+00		; <i1> [#uses=1]
+	%bothcond1 = or i1 %tmp18, %tmp24		; <i1> [#uses=1]
+	br i1 %bothcond1, label %bb29, label %bb27
+
+bb27:		; preds = %bb15
+	%tmp28 = call i32* @__error( ) nounwind 		; <i32*> [#uses=1]
+	store i32 33, i32* %tmp28, align 4
+	ret double undef, double undef
+
+bb29:		; preds = %bb15
+	%tmp36 = fcmp une double %b.1, 0.000000e+00		; <i1> [#uses=1]
+	br i1 %tmp36, label %bb39, label %bb47
+
+bb39:		; preds = %bb29
+	br label %bb47
+
+bb47:		; preds = %bb39, %bb29
+	ret double undef, double undef
+
+bb53:		; preds = %entry
+	ret double undef, double undef
+}
+
+declare i32* @__error()
+
+declare double @pow(double, double) nounwind readonly 
+
+declare double @cos(double) nounwind readonly 
diff --git a/test/Transforms/SimplifyCFG/2008-04-27-MultipleReturnCrash.ll b/test/Transforms/SimplifyCFG/2008-04-27-MultipleReturnCrash.ll
new file mode 100644
index 0000000..ba33d84
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-04-27-MultipleReturnCrash.ll
@@ -0,0 +1,30 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; PR2256
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-mingw32"
+
+define { x86_fp80, x86_fp80 } @catanl({ x86_fp80, x86_fp80 }* byval  %Z, i1 %cond) nounwind  {
+bb:		; preds = %entry
+	br i1  %cond, label %bb48, label %bb40
+
+bb40:		; preds = %bb
+	store i32 34, i32* null, align 4
+	br label %bb196
+
+bb48:		; preds = %bb.bb48_crit_edge, %entry.bb48_crit_edge
+	%tmp53 = icmp eq i32 0, 1280		; <i1> [#uses=1]
+	br i1 %tmp53, label %bb56, label %bb174
+
+bb56:		; preds = %bb48
+	%iftmp.0.0 = select i1 false, x86_fp80 0xK3FFFC90FDAA22168C235, x86_fp80 0xKBFFFC90FDAA22168C235		; <x86_fp80> [#uses=0]
+	br label %bb196
+
+
+bb174:		; preds = %bb144, %bb114
+	%tmp191 = fmul x86_fp80 0xK00000000000000000000, 0xK3FFE8000000000000000		; <x86_fp80> [#uses=1]
+	br label %bb196
+
+bb196:		; preds = %bb174, %bb56, %bb40
+	%Res.1.0 = phi x86_fp80 [ 0xK7FFF8000000000000000, %bb40 ], [ %tmp191, %bb174 ], [ 0xK00000000000000000000, %bb56 ]		; <x86_fp80> [#uses=1]
+	ret x86_fp80 0xK00000000000000000000, x86_fp80 %Res.1.0
+}
diff --git a/test/Transforms/SimplifyCFG/2008-05-16-PHIBlockMerge.ll b/test/Transforms/SimplifyCFG/2008-05-16-PHIBlockMerge.ll
new file mode 100644
index 0000000..59e886b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-05-16-PHIBlockMerge.ll
@@ -0,0 +1,131 @@
+; RUN: opt < %s -simplifycfg -S > %t
+; RUN: not grep {^BB.tomerge} %t
+; RUN  grep {^BB.nomerge} %t | count 2
+
+; ModuleID = '<stdin>' 
+declare i1 @foo()
+
+declare i1 @bar(i32)
+
+; This function can't be merged
+define void @a() {
+entry:
+	br label %BB.nomerge
+
+BB.nomerge:		; preds = %Common, %entry
+        ; This phi has a conflicting value (0) with below phi (2), so blocks
+        ; can't be merged.
+	%a = phi i32 [ 1, %entry ], [ 0, %Common ]		; <i32> [#uses=1]
+	br label %Succ
+
+Succ:		; preds = %Common, %BB.nomerge
+	%b = phi i32 [ %a, %BB.nomerge ], [ 2, %Common ]		; <i32> [#uses=0]
+	%conde = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %conde, label %Common, label %Exit
+
+Common:		; preds = %Succ
+	%cond = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %cond, label %BB.nomerge, label %Succ
+
+Exit:		; preds = %Succ
+	ret void
+}
+
+; This function can't be merged
+define void @b() {
+entry:
+	br label %BB.nomerge
+
+BB.nomerge:		; preds = %Common, %entry
+	br label %Succ
+
+Succ:		; preds = %Common, %BB.nomerge
+        ; This phi has confliction values for Common and (through BB) Common,
+        ; blocks can't be merged
+	%b = phi i32 [ 1, %BB.nomerge ], [ 2, %Common ]		; <i32> [#uses=0]
+	%conde = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %conde, label %Common, label %Exit
+
+Common:		; preds = %Succ
+	%cond = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %cond, label %BB.nomerge, label %Succ
+
+Exit:		; preds = %Succ
+	ret void
+}
+
+; This function can be merged
+define void @c() {
+entry:
+	br label %BB.tomerge
+
+BB.tomerge:		; preds = %Common, %entry
+	br label %Succ
+
+Succ:		; preds = %Common, %BB.tomerge, %Pre-Exit
+        ; This phi has identical values for Common and (through BB) Common,
+        ; blocks can't be merged
+	%b = phi i32 [ 1, %BB.tomerge ], [ 1, %Common ], [ 2, %Pre-Exit ]
+	%conde = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %conde, label %Common, label %Pre-Exit
+
+Common:		; preds = %Succ
+	%cond = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %cond, label %BB.tomerge, label %Succ
+
+Pre-Exit:       ; preds = %Succ
+        ; This adds a backedge, so the %b phi node gets a third branch and is
+        ; not completely trivial
+	%cond2 = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %cond2, label %Succ, label %Exit
+        
+Exit:		; preds = %Pre-Exit
+	ret void
+}
+
+; This function can be merged
+define void @d() {
+entry:
+	br label %BB.tomerge
+
+BB.tomerge:		; preds = %Common, %entry
+        ; This phi has a matching value (0) with below phi (0), so blocks
+        ; can be merged.
+	%a = phi i32 [ 1, %entry ], [ 0, %Common ]		; <i32> [#uses=1]
+	br label %Succ
+
+Succ:		; preds = %Common, %BB.tomerge
+	%b = phi i32 [ %a, %BB.tomerge ], [ 0, %Common ]		; <i32> [#uses=0]
+	%conde = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %conde, label %Common, label %Exit
+
+Common:		; preds = %Succ
+	%cond = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %cond, label %BB.tomerge, label %Succ
+
+Exit:		; preds = %Succ
+	ret void
+}
+
+; This function can be merged
+define void @e() {
+entry:
+	br label %BB.tomerge
+
+BB.tomerge:		; preds = %Use, %entry
+        ; This phi is used somewhere else than Succ, but this should not prevent
+        ; merging this block
+	%a = phi i32 [ 1, %entry ], [ 0, %Use ]		; <i32> [#uses=1]
+	br label %Succ
+
+Succ:		; preds = %BB.tomerge
+	%conde = call i1 @foo( )		; <i1> [#uses=1]
+	br i1 %conde, label %Use, label %Exit
+
+Use:		; preds = %Succ
+	%cond = call i1 @bar( i32 %a )		; <i1> [#uses=1]
+	br i1 %cond, label %BB.tomerge, label %Exit
+
+Exit:		; preds = %Use, %Succ
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/2008-07-13-InfLoopMiscompile.ll b/test/Transforms/SimplifyCFG/2008-07-13-InfLoopMiscompile.ll
new file mode 100644
index 0000000..d025dee
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-07-13-InfLoopMiscompile.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -simplifycfg -S | grep {%outval = phi i32 .*mux}
+; PR2540
+; Outval should end up with a select from 0/2, not all constants.
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
+target triple = "i386-pc-linux-gnu"
+@g_37 = common global i32 0		; <i32*> [#uses=1]
+@.str = internal constant [4 x i8] c"%d\0A\00"		; <[4 x i8]*> [#uses=1]
+
+define i32 @main() nounwind  {
+entry:
+	%l = load i32* @g_37, align 4		; <i32> [#uses=1]
+	%cmpa = icmp ne i32 %l, 0		; <i1> [#uses=3]
+	br i1 %cmpa, label %func_1.exit, label %mooseblock
+
+mooseblock:		; preds = %entry
+	%cmpb = icmp eq i1 %cmpa, false		; <i1> [#uses=2]
+	br i1 %cmpb, label %monkeyblock, label %beeblock
+
+monkeyblock:		; preds = %monkeyblock, %mooseblock
+	br i1 %cmpb, label %cowblock, label %monkeyblock
+
+beeblock:		; preds = %beeblock, %mooseblock
+	br i1 %cmpa, label %cowblock, label %beeblock
+
+cowblock:		; preds = %beeblock, %monkeyblock
+	%cowval = phi i32 [ 2, %beeblock ], [ 0, %monkeyblock ]		; <i32> [#uses=1]
+	br label %func_1.exit
+
+func_1.exit:		; preds = %cowblock, %entry
+	%outval = phi i32 [ %cowval, %cowblock ], [ 1, %entry ]		; <i32> [#uses=1]
+	%pout = tail call i32 (i8*, ...)* @printf( i8* noalias  getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %outval ) nounwind 		; <i32> [#uses=0]
+	ret i32 0
+}
+
+declare i32 @printf(i8*, ...) nounwind 
diff --git a/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll b/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll
new file mode 100644
index 0000000..ac9622d
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll
@@ -0,0 +1,60 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; PR 2777
+@g_103 = common global i32 0		; <i32*> [#uses=1]
+
+define i32 @func_127(i32 %p_129) nounwind {
+entry:
+	load i32* @g_103, align 4		; <i32>:0 [#uses=1]
+	icmp eq i32 %0, 0		; <i1>:1 [#uses=2]
+	br i1 %1, label %bb6.preheader, label %entry.return_crit_edge
+
+entry.return_crit_edge:		; preds = %entry
+	br label %return
+
+bb6.preheader:		; preds = %entry
+	br i1 %1, label %bb6.preheader.split.us, label %bb6.preheader.split
+
+bb6.preheader.split.us:		; preds = %bb6.preheader
+	br label %return.loopexit.split
+
+bb6.preheader.split:		; preds = %bb6.preheader
+	br label %bb6
+
+bb6:		; preds = %bb17.bb6_crit_edge, %bb6.preheader.split
+	%indvar35 = phi i32 [ 0, %bb6.preheader.split ], [ %indvar.next36, %bb17.bb6_crit_edge ]		; <i32> [#uses=1]
+	%p_129_addr.3.reg2mem.0 = phi i32 [ %p_129_addr.2, %bb17.bb6_crit_edge ], [ %p_129, %bb6.preheader.split ]		; <i32> [#uses=3]
+	icmp eq i32 %p_129_addr.3.reg2mem.0, 0		; <i1>:2 [#uses=1]
+	br i1 %2, label %bb6.bb17_crit_edge, label %bb8
+
+bb6.bb17_crit_edge:		; preds = %bb6
+	br label %bb17
+
+bb8:		; preds = %bb6
+	br label %bb13
+
+bb13:		; preds = %bb8
+	br label %bb17
+
+bb17:		; preds = %bb13, %bb6.bb17_crit_edge
+	%p_129_addr.2 = phi i32 [ %p_129_addr.3.reg2mem.0, %bb13 ], [ %p_129_addr.3.reg2mem.0, %bb6.bb17_crit_edge ]		; <i32> [#uses=1]
+	%indvar.next36 = add i32 %indvar35, 1		; <i32> [#uses=2]
+	%exitcond37 = icmp eq i32 %indvar.next36, -1		; <i1> [#uses=1]
+	br i1 %exitcond37, label %return.loopexit, label %bb17.bb6_crit_edge
+
+bb17.bb6_crit_edge:		; preds = %bb17
+	br label %bb6
+
+return.loopexit:		; preds = %bb17
+	br label %return.loopexit.split
+
+return.loopexit.split:		; preds = %return.loopexit, %bb6.preheader.split.us
+	br label %return
+
+return:		; preds = %return.loopexit.split, %entry.return_crit_edge
+	ret i32 1
+}
+
+define i32 @func_135(i8 zeroext %p_137, i32 %p_138, i32 %p_140) nounwind {
+entry:
+	ret i32 undef
+}
diff --git a/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll b/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll
new file mode 100644
index 0000000..f864184
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll
@@ -0,0 +1,18 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; PR 2800
+
+define void @foo() {
+start:
+	%tmp = call i1 @bar( )		; <i1> [#uses=4]
+	br i1 %tmp, label %brtrue, label %brfalse
+
+brtrue:		; preds = %start
+	%tmpnew = and i1 %tmp, %tmp		; <i1> [#uses=1]
+	br label %brfalse
+
+brfalse:		; preds = %brtrue, %start
+	%andandtmp.0 = phi i1 [ %tmp, %start ], [ %tmpnew, %brtrue ]		; <i1> [#uses=0]
+	ret void
+}
+
+declare i1 @bar()
diff --git a/test/Transforms/SimplifyCFG/2008-10-03-SpeculativelyExecuteBeforePHI.ll b/test/Transforms/SimplifyCFG/2008-10-03-SpeculativelyExecuteBeforePHI.ll
new file mode 100644
index 0000000..bb137c1
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-10-03-SpeculativelyExecuteBeforePHI.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -simplifycfg
+; PR2855
+
+define i32 @_Z1fPii(i32* %b, i32 %f) nounwind {
+entry:
+	br label %bb
+
+bb:		; preds = %bb9, %bb7, %bb, %entry
+	%__c2.2 = phi i32 [ undef, %entry ], [ %__c2.1, %bb7 ], [ %__c2.1, %bb9 ]		; <i32> [#uses=2]
+	%s.0 = phi i32 [ 0, %entry ], [ 0, %bb7 ], [ %2, %bb9 ]		; <i32> [#uses=1]
+	br label %bb1
+
+bb1:		; preds = %bb
+	%0 = icmp slt i32 0, %f		; <i1> [#uses=1]
+	br i1 %0, label %bb3, label %bb6
+
+bb3:		; preds = %bb1
+	%1 = icmp eq i32 0, 0		; <i1> [#uses=1]
+	br i1 %1, label %bb6, label %bb5
+
+bb5:		; preds = %bb3
+	br label %bb7
+
+bb6:		; preds = %bb3, %bb1
+	%__c2.0 = phi i32 [ 0, %bb3 ], [ %__c2.2, %bb1 ]		; <i32> [#uses=1]
+	br label %bb7
+
+bb7:		; preds = %bb6, %bb5
+	%__c2.1 = phi i32 [ 0, %bb5 ], [ %__c2.0, %bb6 ]		; <i32> [#uses=2]
+	%iftmp.1.0 = phi i1 [ false, %bb5 ], [ true, %bb6 ]		; <i1> [#uses=1]
+	br i1 %iftmp.1.0, label %bb, label %bb9
+
+bb9:		; preds = %bb7
+	%2 = add i32 %s.0, 2		; <i32> [#uses=1]
+	br label %bb
+}
diff --git a/test/Transforms/SimplifyCFG/2008-12-06-SingleEntryPhi.ll b/test/Transforms/SimplifyCFG/2008-12-06-SingleEntryPhi.ll
new file mode 100644
index 0000000..d3c7c32
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-12-06-SingleEntryPhi.ll
@@ -0,0 +1,13 @@
+; RUN: opt < %s -simplifycfg | llvm-dis
+define i32 @test() {
+entry:
+	br label %T
+T:
+	%C = phi i1 [false, %entry] 
+	br i1 %C, label %X, label %Y
+X:
+	ret i32 2
+Y:
+	add i32 1, 2
+	ret i32 1
+}
diff --git a/test/Transforms/SimplifyCFG/2008-12-16-DCECond.ll b/test/Transforms/SimplifyCFG/2008-12-16-DCECond.ll
new file mode 100644
index 0000000..7271024
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2008-12-16-DCECond.ll
@@ -0,0 +1,46 @@
+; RUN: opt < %s -simplifycfg -S | not grep icmp
+; ModuleID = '/tmp/x.bc'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-pc-linux-gnu"
+
+define i32 @x(i32 %x) {
+entry:
+	%cmp = icmp eq i32 %x, 8		; <i1> [#uses=1]
+	br i1 %cmp, label %ifthen, label %ifend
+
+ifthen:		; preds = %entry
+	%call = call i32 (...)* @foo()		; <i32> [#uses=0]
+	br label %ifend
+
+ifend:		; preds = %ifthen, %entry
+	%cmp2 = icmp ne i32 %x, 8		; <i1> [#uses=1]
+	br i1 %cmp2, label %ifthen3, label %ifend5
+
+ifthen3:		; preds = %ifend
+	%call4 = call i32 (...)* @foo()		; <i32> [#uses=0]
+	br label %ifend5
+
+ifend5:		; preds = %ifthen3, %ifend
+	%cmp7 = icmp eq i32 %x, 9		; <i1> [#uses=1]
+	br i1 %cmp7, label %ifthen8, label %ifend10
+
+ifthen8:		; preds = %ifend5
+	%call9 = call i32 (...)* @bar()		; <i32> [#uses=0]
+	br label %ifend10
+
+ifend10:		; preds = %ifthen8, %ifend5
+	%cmp12 = icmp ne i32 %x, 9		; <i1> [#uses=1]
+	br i1 %cmp12, label %ifthen13, label %ifend15
+
+ifthen13:		; preds = %ifend10
+	%call14 = call i32 (...)* @bar()		; <i32> [#uses=0]
+	br label %ifend15
+
+ifend15:		; preds = %ifthen13, %ifend10
+	ret i32 0
+}
+
+declare i32 @foo(...)
+
+declare i32 @bar(...)
+
diff --git a/test/Transforms/SimplifyCFG/2009-01-18-PHIPropCrash.ll b/test/Transforms/SimplifyCFG/2009-01-18-PHIPropCrash.ll
new file mode 100644
index 0000000..c6ae6ac
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2009-01-18-PHIPropCrash.ll
@@ -0,0 +1,30 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; PR3016
+; Dead use caused invariant violation.
+
+define i32 @func_105(i1 %tmp5, i1 %tmp7) nounwind {
+BB:
+	br i1 true, label %BB2, label %BB1
+
+BB1:		; preds = %BB
+	br label %BB2
+
+BB2:		; preds = %BB1, %BB
+	%tmp3 = phi i1 [ true, %BB ], [ false, %BB1 ]		; <i1> [#uses=1]
+	br label %BB9
+
+BB9:		; preds = %BB11, %BB2
+	%tmp10 = phi i32 [ 0, %BB2 ], [ %tmp12, %BB11 ]		; <i32> [#uses=1]
+	br i1 %tmp5, label %BB11, label %BB13
+
+BB11:		; preds = %BB13, %BB9
+	%tmp12 = phi i32 [ 0, %BB13 ], [ %tmp10, %BB9 ]		; <i32> [#uses=2]
+	br i1 %tmp3, label %BB9, label %BB20
+
+BB13:		; preds = %BB13, %BB9
+	%tmp14 = phi i32 [ 0, %BB9 ], [ %tmp14, %BB13 ]		; <i32> [#uses=1]
+	br i1 %tmp7, label %BB13, label %BB11
+
+BB20:		; preds = %BB11
+	ret i32 %tmp12
+}
diff --git a/test/Transforms/SimplifyCFG/2009-01-19-UnconditionalTrappingConstantExpr.ll b/test/Transforms/SimplifyCFG/2009-01-19-UnconditionalTrappingConstantExpr.ll
new file mode 100644
index 0000000..33167bd
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2009-01-19-UnconditionalTrappingConstantExpr.ll
@@ -0,0 +1,31 @@
+; RUN: opt < %s -simplifycfg -S | grep {br i1 } | count 4
+; PR3354
+; Do not merge bb1 into the entry block, it might trap.
+
+@G = extern_weak global i32
+
+define i32 @test(i32 %tmp21, i32 %tmp24) {
+	%tmp25 = icmp sle i32 %tmp21, %tmp24		
+	br i1 %tmp25, label %bb2, label %bb1	
+					
+bb1:		; preds = %bb	
+	%tmp26 = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
+	br i1 %tmp26, label %bb6, label %bb2		
+bb2:
+	ret i32 42
+
+bb6:
+	unwind
+}
+
+define i32 @test2(i32 %tmp21, i32 %tmp24, i1 %tmp34) {
+	br i1 %tmp34, label %bb5, label %bb6
+
+bb5:		; preds = %bb4
+	br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7
+bb6:
+	ret i32 42
+bb7:
+	unwind
+}
+
diff --git a/test/Transforms/SimplifyCFG/2009-03-05-Speculative-Hoist-Dbg.ll b/test/Transforms/SimplifyCFG/2009-03-05-Speculative-Hoist-Dbg.ll
new file mode 100644
index 0000000..db56fdb
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2009-03-05-Speculative-Hoist-Dbg.ll
@@ -0,0 +1,108 @@
+; RUN: opt < %s -simplifycfg -S | grep select
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+external global <{ i8 }>		; <<{ i8 }>*>:0 [#uses=0]
+@__dso_handle = external global i8*		; <i8**> [#uses=0]
+@_ZSt3cin = external global { i32 (...)**, i32, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, \3 }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }		; <{ i32 (...)**, i32, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, \3 }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+@_ZSt4cout = external global { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+external constant [2 x i8]		; <[2 x i8]*>:1 [#uses=1]
+@llvm.global_ctors = external global [1 x { i32, void ()* }]		; <[1 x { i32, void ()* }]*> [#uses=0]
+
+define i32 @main(i32, i8**) {
+; <label>:2
+	%3 = alloca [4096 x i8], align 1		; <[4096 x i8]*> [#uses=1]
+	%4 = call { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* @_ZNKSt9basic_iosIcSt11char_traitsIcEE5rdbufEv({ { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* }* getelementptr ({ i32 (...)**, i32, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, \3 }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZSt3cin, i32 0, i32 2))		; <{ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*> [#uses=1]
+	%5 = getelementptr [4096 x i8]* %3, i32 0, i32 0		; <i8*> [#uses=1]
+	%6 = call { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* @_ZNSt15basic_streambufIcSt11char_traitsIcEE9pubsetbufEPci({ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* %4, i8* %5, i32 4096)		; <{ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*> [#uses=0]
+	%7 = call { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* @_ZNKSt9basic_iosIcSt11char_traitsIcEE5rdbufEv({ { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* }* getelementptr ({ i32 (...)**, i32, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, \3 }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZSt3cin, i32 0, i32 2))		; <{ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*> [#uses=1]
+	br label %25
+
+; <label>:8		; preds = %25
+	%9 = trunc i32 %26 to i8		; <i8> [#uses=4]
+	%10 = add i32 %.02, 1		; <i32> [#uses=3]
+	%11 = icmp eq i8 %9, 10		; <i1> [#uses=1]
+	br i1 %11, label %12, label %14
+
+; <label>:12		; preds = %8
+	%13 = add i32 %.1, 1		; <i32> [#uses=1]
+	br label %14
+
+; <label>:14		; preds = %12, %8
+	%.0 = phi i32 [ %.1, %8 ], [ %13, %12 ]		; <i32> [#uses=3]
+	%15 = icmp eq i8 %9, 32		; <i1> [#uses=1]
+	br i1 %15, label %20, label %16
+
+; <label>:16		; preds = %14
+	%17 = icmp eq i8 %9, 10		; <i1> [#uses=1]
+	br i1 %17, label %20, label %18
+
+; <label>:18		; preds = %16
+	%19 = icmp eq i8 %9, 9		; <i1> [#uses=1]
+	br i1 %19, label %20, label %21
+
+; <label>:20		; preds = %18, %16, %14
+	br label %25
+
+; <label>:21		; preds = %18
+	%22 = icmp eq i32 %.03, 0		; <i1> [#uses=1]
+	br i1 %22, label %23, label %25
+
+; <label>:23		; preds = %21
+        call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%24 = add i32 %.01, 1		; <i32> [#uses=1]
+	br label %25
+
+; <label>:25		; preds = %23, %21, %20, %2
+	%.03 = phi i32 [ 0, %2 ], [ %.03, %21 ], [ 1, %23 ], [ 0, %20 ]		; <i32> [#uses=2]
+	%.02 = phi i32 [ 0, %2 ], [ %10, %21 ], [ %10, %23 ], [ %10, %20 ]		; <i32> [#uses=2]
+	%.01 = phi i32 [ 0, %2 ], [ %.01, %21 ], [ %24, %23 ], [ %.01, %20 ]		; <i32> [#uses=4]
+	%.1 = phi i32 [ 0, %2 ], [ %.0, %21 ], [ %.0, %23 ], [ %.0, %20 ]		; <i32> [#uses=3]
+	%26 = call i32 @_ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv({ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* %7)		; <i32> [#uses=2]
+	%27 = icmp eq i32 %26, -1		; <i1> [#uses=1]
+	br i1 %27, label %28, label %8
+
+; <label>:28		; preds = %25
+	%29 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEi({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZSt4cout, i32 %.1)		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+	%30 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* %29, i8* getelementptr ([2 x i8]* @1, i32 0, i32 0))		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+	%31 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEi({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* %30, i32 %.01)		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+	%32 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* %31, i8* getelementptr ([2 x i8]* @1, i32 0, i32 0))		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+	%33 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEi({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* %32, i32 %.02)		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=1]
+	%34 = call { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEPFRSoS_E({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* %33, { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* ({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*)* @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)		; <{ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*> [#uses=0]
+	ret i32 0
+}
+
+declare void @""() section "__TEXT,__StaticInit,regular,pure_instructions"
+
+declare fastcc void @""() section "__TEXT,__StaticInit,regular,pure_instructions"
+
+declare void @_ZNSt8ios_base4InitC1Ev(<{ i8 }>*)
+
+declare i32 @__cxa_atexit(void (i8*)*, i8*, i8*) nounwind
+
+declare void @""(i8*)
+
+declare void @_ZNSt8ios_base4InitD1Ev(<{ i8 }>*)
+
+declare { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* @_ZNKSt9basic_iosIcSt11char_traitsIcEE5rdbufEv({ { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* }*)
+
+declare { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }* @_ZNSt15basic_streambufIcSt11char_traitsIcEE9pubsetbufEPci({ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, i8*, i32)
+
+declare i32 @_ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv({ i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*)
+
+declare { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEi({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, i32)
+
+declare { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, i8*)
+
+declare { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZNSolsEPFRSoS_E({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*, { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* ({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*)*)
+
+declare { i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }* @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_({ i32 (...)**, { { i32 (...)**, i32, i32, i32, i32, i32, { \2, void (i32, \6*, i32)*, i32, i32 }*, { i8*, i32 }, [8 x { i8*, i32 }], i32, { i8*, i32 }*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }, \3*, i8, i8, { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, { { i32, { i32 (...)**, i32 }**, i32, { i32 (...)**, i32 }**, i8** }* } }*, { { i32 (...)**, i32 }, i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }*, { { i32 (...)**, i32 } }*, { { i32 (...)**, i32 } }* } }*)
diff --git a/test/Transforms/SimplifyCFG/2009-05-12-externweak.ll b/test/Transforms/SimplifyCFG/2009-05-12-externweak.ll
new file mode 100644
index 0000000..419feb6
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2009-05-12-externweak.ll
@@ -0,0 +1,47 @@
+; RUN: opt < %s -simplifycfg -S | not grep select
+; ModuleID = '<stdin>'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i386-apple-darwin10.0"
+module asm ".globl _foo"
+module asm "_foo: ret"
+module asm ".globl _i"
+module asm ".set _i, 0"
+@i = extern_weak global i32		; <i32*> [#uses=2]
+@j = common global i32 0		; <i32*> [#uses=1]
+@ed = common global double 0.000000e+00, align 8		; <double*> [#uses=1]
+
+define i32 @main() nounwind ssp {
+entry:
+	br label %bb4
+
+bb:		; preds = %bb4
+	br i1 icmp ne (i32* @i, i32* null), label %bb1, label %bb2
+
+bb1:		; preds = %bb
+	%0 = load i32* @i, align 4		; <i32> [#uses=1]
+	br label %bb3
+
+bb2:		; preds = %bb
+	br label %bb3
+
+bb3:		; preds = %bb2, %bb1
+	%storemerge = phi i32 [ %0, %bb1 ], [ 0, %bb2 ]		; <i32> [#uses=2]
+	store i32 %storemerge, i32* @j
+	%1 = sitofp i32 %storemerge to double		; <double> [#uses=1]
+	%2 = call double @sin(double %1) nounwind readonly		; <double> [#uses=1]
+	%3 = fadd double %2, %d.0		; <double> [#uses=1]
+	%4 = add i32 %l.0, 1		; <i32> [#uses=1]
+	br label %bb4
+
+bb4:		; preds = %bb3, %entry
+	%d.0 = phi double [ undef, %entry ], [ %3, %bb3 ]		; <double> [#uses=2]
+	%l.0 = phi i32 [ 0, %entry ], [ %4, %bb3 ]		; <i32> [#uses=2]
+	%5 = icmp sgt i32 %l.0, 99		; <i1> [#uses=1]
+	br i1 %5, label %bb5, label %bb
+
+bb5:		; preds = %bb4
+	store double %d.0, double* @ed, align 8
+	ret i32 0
+}
+
+declare double @sin(double) nounwind readonly
diff --git a/test/Transforms/SimplifyCFG/2009-06-15-InvokeCrash.ll b/test/Transforms/SimplifyCFG/2009-06-15-InvokeCrash.ll
new file mode 100644
index 0000000..72a15b1
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2009-06-15-InvokeCrash.ll
@@ -0,0 +1,557 @@
+; RUN: opt < %s -simplifycfg -disable-output
+; END.
+	%struct..4._102 = type { %struct.QVectorData* }
+	%struct..5._125 = type { %struct.QMapData* }
+	%struct.QAbstractTextDocumentLayout = type { %struct.QObject }
+	%struct.QBasicAtomic = type { i32 }
+	%struct.QFont = type { %struct.QFontPrivate*, i32 }
+	%struct.QFontMetrics = type { %struct.QFontPrivate* }
+	%struct.QFontPrivate = type opaque
+	%"struct.QFragmentMap<QTextBlockData>" = type { %struct.QFragmentMapData }
+	%struct.QFragmentMapData = type { %"struct.QFragmentMapData::._154", i32 }
+	%"struct.QFragmentMapData::._154" = type { %"struct.QFragmentMapData::Header"* }
+	%"struct.QFragmentMapData::Header" = type { i32, i32, i32, i32, i32, i32, i32, i32 }
+	%"struct.QHash<uint,QHashDummyValue>" = type { %"struct.QHash<uint,QHashDummyValue>::._152" }
+	%"struct.QHash<uint,QHashDummyValue>::._152" = type { %struct.QHashData* }
+	%struct.QHashData = type { %"struct.QHashData::Node"*, %"struct.QHashData::Node"**, %struct.QBasicAtomic, i32, i32, i16, i16, i32, i8 }
+	%"struct.QHashData::Node" = type { %"struct.QHashData::Node"*, i32 }
+	%"struct.QList<QObject*>::._92" = type { %struct.QListData }
+	%"struct.QList<QPointer<QObject> >" = type { %"struct.QList<QObject*>::._92" }
+	%struct.QListData = type { %"struct.QListData::Data"* }
+	%"struct.QListData::Data" = type { %struct.QBasicAtomic, i32, i32, i32, i8, [1 x i8*] }
+	%"struct.QMap<QUrl,QVariant>" = type { %struct..5._125 }
+	%struct.QMapData = type { %"struct.QMapData::Node"*, [12 x %"struct.QMapData::Node"*], %struct.QBasicAtomic, i32, i32, i32, i8 }
+	%"struct.QMapData::Node" = type { %"struct.QMapData::Node"*, [1 x %"struct.QMapData::Node"*] }
+	%struct.QObject = type { i32 (...)**, %struct.QObjectData* }
+	%struct.QObjectData = type { i32 (...)**, %struct.QObject*, %struct.QObject*, %"struct.QList<QPointer<QObject> >", i8, [3 x i8], i32, i32 }
+	%struct.QObjectPrivate = type { %struct.QObjectData, i32, %struct.QObject*, %"struct.QList<QPointer<QObject> >", %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %struct.QString }
+	%struct.QPaintDevice = type { i32 (...)**, i16 }
+	%struct.QPainter = type { %struct.QPainterPrivate* }
+	%struct.QPainterPrivate = type opaque
+	%struct.QPointF = type { double, double }
+	%struct.QPrinter = type { %struct.QPaintDevice, %struct.QPrinterPrivate* }
+	%struct.QPrinterPrivate = type opaque
+	%struct.QRectF = type { double, double, double, double }
+	%"struct.QSet<uint>" = type { %"struct.QHash<uint,QHashDummyValue>" }
+	%"struct.QSharedDataPointer<QTextFormatPrivate>" = type { %struct.QTextFormatPrivate* }
+	%struct.QString = type { %"struct.QString::Data"* }
+	%"struct.QString::Data" = type { %struct.QBasicAtomic, i32, i32, i16*, i8, i8, [1 x i16] }
+	%struct.QTextBlockFormat = type { %struct.QTextFormat }
+	%struct.QTextBlockGroup = type { %struct.QAbstractTextDocumentLayout }
+	%struct.QTextDocumentConfig = type { %struct.QString }
+	%struct.QTextDocumentPrivate = type { %struct.QObjectPrivate, %struct.QString, %"struct.QVector<QAbstractTextDocumentLayout::Selection>", i1, i32, i32, i1, i32, i32, i32, i32, i1, %struct.QTextFormatCollection, %struct.QTextBlockGroup*, %struct.QAbstractTextDocumentLayout*, %"struct.QFragmentMap<QTextBlockData>", %"struct.QFragmentMap<QTextBlockData>", i32, %"struct.QList<QPointer<QObject> >", %"struct.QList<QPointer<QObject> >", %"struct.QMap<QUrl,QVariant>", %"struct.QMap<QUrl,QVariant>", %"struct.QMap<QUrl,QVariant>", %struct.QTextDocumentConfig, i1, i1, %struct.QPointF }
+	%struct.QTextFormat = type { %"struct.QSharedDataPointer<QTextFormatPrivate>", i32 }
+	%struct.QTextFormatCollection = type { %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %"struct.QVector<QAbstractTextDocumentLayout::Selection>", %"struct.QSet<uint>", %struct.QFont }
+	%struct.QTextFormatPrivate = type opaque
+	%"struct.QVector<QAbstractTextDocumentLayout::Selection>" = type { %struct..4._102 }
+	%struct.QVectorData = type { %struct.QBasicAtomic, i32, i32, i8 }
+
+define void @_ZNK13QTextDocument5printEP8QPrinter(%struct.QAbstractTextDocumentLayout* %this, %struct.QPrinter* %printer) {
+entry:
+	%tmp = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=2]
+	%tmp.upgrd.1 = alloca %struct.QRectF, align 16		; <%struct.QRectF*> [#uses=5]
+	%tmp2 = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=3]
+	%tmp.upgrd.2 = alloca %struct.QFontMetrics, align 16		; <%struct.QFontMetrics*> [#uses=4]
+	%tmp.upgrd.3 = alloca %struct.QFont, align 16		; <%struct.QFont*> [#uses=4]
+	%tmp3 = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=2]
+	%p = alloca %struct.QPainter, align 16		; <%struct.QPainter*> [#uses=14]
+	%body = alloca %struct.QRectF, align 16		; <%struct.QRectF*> [#uses=9]
+        %foo = alloca double, align 8
+        %bar = alloca double, align 8
+	%pageNumberPos = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=4]
+	%scaledPageSize = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=6]
+	%printerPageSize = alloca %struct.QPointF, align 16		; <%struct.QPointF*> [#uses=3]
+	%fmt = alloca %struct.QTextBlockFormat, align 16		; <%struct.QTextBlockFormat*> [#uses=5]
+	%font = alloca %struct.QFont, align 16		; <%struct.QFont*> [#uses=5]
+	%tmp.upgrd.4 = call %struct.QTextDocumentPrivate* @_ZNK13QTextDocument6d_funcEv( %struct.QAbstractTextDocumentLayout* %this )		; <%struct.QTextDocumentPrivate*> [#uses=5]
+	%tmp.upgrd.5 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	call void @_ZN8QPainterC1EP12QPaintDevice( %struct.QPainter* %p, %struct.QPaintDevice* %tmp.upgrd.5 )
+	%tmp.upgrd.6 = invoke i1 @_ZNK8QPainter8isActiveEv( %struct.QPainter* %p )
+			to label %invcont unwind label %cleanup329		; <i1> [#uses=1]
+invcont:		; preds = %entry
+	br i1 %tmp.upgrd.6, label %cond_next, label %cleanup328
+cond_next:		; preds = %invcont
+	%tmp8 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %this )
+			to label %invcont7 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=0]
+invcont7:		; preds = %cond_next
+	%tmp10 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	call void @_ZN7QPointFC1Edd( %struct.QPointF* %tmp, double 0.000000e+00, double 0.000000e+00 )
+	call void @_ZN6QRectFC1ERK7QPointFRK6QSizeF( %struct.QRectF* %body, %struct.QPointF* %tmp, %struct.QPointF* %tmp10 )
+	call void @_ZN7QPointFC1Ev( %struct.QPointF* %pageNumberPos )
+	%tmp12 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	%tmp13 = call i1 @_ZNK6QSizeF7isValidEv( %struct.QPointF* %tmp12 )		; <i1> [#uses=1]
+	br i1 %tmp13, label %cond_next15, label %bb
+cond_next15:		; preds = %invcont7
+	%tmp17 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26		; <%struct.QPointF*> [#uses=1]
+	%tmp.upgrd.7 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %tmp17 )		; <double> [#uses=1]
+	%tmp18 = fcmp oeq double %tmp.upgrd.7, 0x41DFFFFFFFC00000		; <i1> [#uses=1]
+	br i1 %tmp18, label %bb, label %cond_next20
+cond_next20:		; preds = %cond_next15
+	br label %bb21
+bb:		; preds = %cond_next15, %invcont7
+	br label %bb21
+bb21:		; preds = %bb, %cond_next20
+	%iftmp.406.0 = phi i1 [ false, %bb ], [ true, %cond_next20 ]		; <i1> [#uses=1]
+	br i1 %iftmp.406.0, label %cond_true24, label %cond_false
+cond_true24:		; preds = %bb21
+	%tmp.upgrd.8 = invoke i32 @_Z13qt_defaultDpiv( )
+			to label %invcont25 unwind label %cleanup329		; <i32> [#uses=1]
+invcont25:		; preds = %cond_true24
+	%tmp26 = sitofp i32 %tmp.upgrd.8 to double		; <double> [#uses=2]
+	%tmp30 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %this )
+			to label %invcont29 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=1]
+invcont29:		; preds = %invcont25
+	%tmp32 = invoke %struct.QPaintDevice* @_ZNK27QAbstractTextDocumentLayout11paintDeviceEv( %struct.QAbstractTextDocumentLayout* %tmp30 )
+			to label %invcont31 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=3]
+invcont31:		; preds = %invcont29
+	%tmp34 = icmp eq %struct.QPaintDevice* %tmp32, null		; <i1> [#uses=1]
+	br i1 %tmp34, label %cond_next42, label %cond_true35
+cond_true35:		; preds = %invcont31
+	%tmp38 = invoke i32 @_ZNK12QPaintDevice11logicalDpiXEv( %struct.QPaintDevice* %tmp32 )
+			to label %invcont37 unwind label %cleanup329		; <i32> [#uses=1]
+invcont37:		; preds = %cond_true35
+	%tmp38.upgrd.9 = sitofp i32 %tmp38 to double		; <double> [#uses=1]
+	%tmp41 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp32 )
+			to label %invcont40 unwind label %cleanup329		; <i32> [#uses=1]
+invcont40:		; preds = %invcont37
+	%tmp41.upgrd.10 = sitofp i32 %tmp41 to double		; <double> [#uses=1]
+	br label %cond_next42
+cond_next42:		; preds = %invcont40, %invcont31
+	%sourceDpiY.2 = phi double [ %tmp41.upgrd.10, %invcont40 ], [ %tmp26, %invcont31 ]		; <double> [#uses=1]
+	%sourceDpiX.2 = phi double [ %tmp38.upgrd.9, %invcont40 ], [ %tmp26, %invcont31 ]		; <double> [#uses=1]
+	%tmp44 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp46 = invoke i32 @_ZNK12QPaintDevice11logicalDpiXEv( %struct.QPaintDevice* %tmp44 )
+			to label %invcont45 unwind label %cleanup329		; <i32> [#uses=1]
+invcont45:		; preds = %cond_next42
+	%tmp46.upgrd.11 = sitofp i32 %tmp46 to double		; <double> [#uses=1]
+	%tmp48 = fdiv double %tmp46.upgrd.11, %sourceDpiX.2		; <double> [#uses=2]
+	%tmp50 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp52 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp50 )
+			to label %invcont51 unwind label %cleanup329		; <i32> [#uses=1]
+invcont51:		; preds = %invcont45
+	%tmp52.upgrd.12 = sitofp i32 %tmp52 to double		; <double> [#uses=1]
+	%tmp54 = fdiv double %tmp52.upgrd.12, %sourceDpiY.2		; <double> [#uses=2]
+	invoke void @_ZN8QPainter5scaleEdd( %struct.QPainter* %p, double %tmp48, double %tmp54 )
+			to label %invcont57 unwind label %cleanup329
+invcont57:		; preds = %invcont51
+	%tmp.upgrd.13 = getelementptr %struct.QPointF* %scaledPageSize, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp60 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26, i32 0		; <double*> [#uses=1]
+	%tmp61 = load double* %tmp60		; <double> [#uses=1]
+	store double %tmp61, double* %tmp.upgrd.13
+	%tmp62 = getelementptr %struct.QPointF* %scaledPageSize, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp63 = getelementptr %struct.QTextDocumentPrivate* %tmp.upgrd.4, i32 0, i32 26, i32 1		; <double*> [#uses=1]
+	%tmp64 = load double* %tmp63		; <double> [#uses=1]
+	store double %tmp64, double* %tmp62
+	%tmp65 = call double* @_ZN6QSizeF6rwidthEv( %struct.QPointF* %scaledPageSize )		; <double*> [#uses=2]
+	%tmp67 = load double* %tmp65		; <double> [#uses=1]
+	%tmp69 = mul double %tmp67, %tmp48		; <double> [#uses=1]
+	store double %tmp69, double* %tmp65
+	%tmp71 = call double* @_ZN6QSizeF7rheightEv( %struct.QPointF* %scaledPageSize )		; <double*> [#uses=2]
+	%tmp73 = load double* %tmp71		; <double> [#uses=1]
+	%tmp75 = mul double %tmp73, %tmp54		; <double> [#uses=1]
+	store double %tmp75, double* %tmp71
+	%tmp78 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp80 = invoke i32 @_ZNK12QPaintDevice6heightEv( %struct.QPaintDevice* %tmp78 )
+			to label %invcont79 unwind label %cleanup329		; <i32> [#uses=1]
+invcont79:		; preds = %invcont57
+	%tmp82 = getelementptr %struct.QPrinter* %printer, i32 0, i32 0		; <%struct.QPaintDevice*> [#uses=1]
+	%tmp84 = invoke i32 @_ZNK12QPaintDevice5widthEv( %struct.QPaintDevice* %tmp82 )
+			to label %invcont83 unwind label %cleanup329		; <i32> [#uses=1]
+invcont83:		; preds = %invcont79
+	%tmp80.upgrd.14 = sitofp i32 %tmp80 to double		; <double> [#uses=1]
+	%tmp84.upgrd.15 = sitofp i32 %tmp84 to double		; <double> [#uses=1]
+	call void @_ZN6QSizeFC1Edd( %struct.QPointF* %printerPageSize, double %tmp84.upgrd.15, double %tmp80.upgrd.14 )
+	%tmp85 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %printerPageSize )		; <double> [#uses=1]
+	%tmp86 = call double @_ZNK6QSizeF6heightEv( %struct.QPointF* %scaledPageSize )		; <double> [#uses=1]
+	%tmp87 = fdiv double %tmp85, %tmp86		; <double> [#uses=1]
+	%tmp88 = call double @_ZNK6QSizeF5widthEv( %struct.QPointF* %printerPageSize )		; <double> [#uses=1]
+	%tmp89 = call double @_ZNK6QSizeF5widthEv( %struct.QPointF* %scaledPageSize )		; <double> [#uses=1]
+	%tmp90 = fdiv double %tmp88, %tmp89		; <double> [#uses=1]
+	invoke void @_ZN8QPainter5scaleEdd( %struct.QPainter* %p, double %tmp90, double %tmp87 )
+			to label %cond_next194 unwind label %cleanup329
+cond_false:		; preds = %bb21
+	%tmp.upgrd.16 = getelementptr %struct.QAbstractTextDocumentLayout* %this, i32 0, i32 0		; <%struct.QObject*> [#uses=1]
+	%tmp95 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument5cloneEP7QObject( %struct.QAbstractTextDocumentLayout* %this, %struct.QObject* %tmp.upgrd.16 )
+			to label %invcont94 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=9]
+invcont94:		; preds = %cond_false
+	%tmp99 = invoke %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv( %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont98 unwind label %cleanup329		; <%struct.QAbstractTextDocumentLayout*> [#uses=1]
+invcont98:		; preds = %invcont94
+	%tmp101 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont100 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=1]
+invcont100:		; preds = %invcont98
+	invoke void @_ZN27QAbstractTextDocumentLayout14setPaintDeviceEP12QPaintDevice( %struct.QAbstractTextDocumentLayout* %tmp99, %struct.QPaintDevice* %tmp101 )
+			to label %invcont103 unwind label %cleanup329
+invcont103:		; preds = %invcont100
+	%tmp105 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont104 unwind label %cleanup329		; <%struct.QPaintDevice*> [#uses=1]
+invcont104:		; preds = %invcont103
+	%tmp107 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp105 )
+			to label %invcont106 unwind label %cleanup329		; <i32> [#uses=1]
+invcont106:		; preds = %invcont104
+	%tmp108 = sitofp i32 %tmp107 to double		; <double> [#uses=1]
+	%tmp109 = mul double %tmp108, 0x3FE93264C993264C		; <double> [#uses=1]
+	%tmp109.upgrd.17 = fptosi double %tmp109 to i32		; <i32> [#uses=3]
+	%tmp.upgrd.18 = call %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv( %struct.QAbstractTextDocumentLayout* %tmp95 )		; <%struct.QTextBlockGroup*> [#uses=1]
+	invoke void @_ZNK10QTextFrame11frameFormatEv( %struct.QTextBlockFormat* sret  %fmt, %struct.QTextBlockGroup* %tmp.upgrd.18 )
+			to label %invcont111 unwind label %cleanup329
+invcont111:		; preds = %invcont106
+	%tmp112 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	invoke void @_ZN16QTextFrameFormat9setMarginEd( %struct.QTextBlockFormat* %fmt, double %tmp112 )
+			to label %invcont114 unwind label %cleanup192
+invcont114:		; preds = %invcont111
+	%tmp116 = call %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv( %struct.QAbstractTextDocumentLayout* %tmp95 )		; <%struct.QTextBlockGroup*> [#uses=1]
+	invoke void @_ZN10QTextFrame14setFrameFormatERK16QTextFrameFormat( %struct.QTextBlockGroup* %tmp116, %struct.QTextBlockFormat* %fmt )
+			to label %invcont117 unwind label %cleanup192
+invcont117:		; preds = %invcont114
+	%tmp119 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont118 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont118:		; preds = %invcont117
+	%tmp121 = invoke i32 @_ZNK12QPaintDevice6heightEv( %struct.QPaintDevice* %tmp119 )
+			to label %invcont120 unwind label %cleanup192		; <i32> [#uses=1]
+invcont120:		; preds = %invcont118
+	%tmp121.upgrd.19 = sitofp i32 %tmp121 to double		; <double> [#uses=1]
+	%tmp123 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont122 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont122:		; preds = %invcont120
+	%tmp125 = invoke i32 @_ZNK12QPaintDevice5widthEv( %struct.QPaintDevice* %tmp123 )
+			to label %invcont124 unwind label %cleanup192		; <i32> [#uses=1]
+invcont124:		; preds = %invcont122
+	%tmp125.upgrd.20 = sitofp i32 %tmp125 to double		; <double> [#uses=1]
+	call void @_ZN6QRectFC1Edddd( %struct.QRectF* %tmp.upgrd.1, double 0.000000e+00, double 0.000000e+00, double %tmp125.upgrd.20, double %tmp121.upgrd.19 )
+	%tmp126 = getelementptr %struct.QRectF* %body, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp127 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp128 = load double* %tmp127		; <double> [#uses=1]
+	store double %tmp128, double* %tmp126
+	%tmp129 = getelementptr %struct.QRectF* %body, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp130 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp131 = load double* %tmp130		; <double> [#uses=1]
+	store double %tmp131, double* %tmp129
+	%tmp132 = getelementptr %struct.QRectF* %body, i32 0, i32 2		; <double*> [#uses=1]
+	%tmp133 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 2		; <double*> [#uses=1]
+	%tmp134 = load double* %tmp133		; <double> [#uses=1]
+	store double %tmp134, double* %tmp132
+	%tmp135 = getelementptr %struct.QRectF* %body, i32 0, i32 3		; <double*> [#uses=1]
+	%tmp136 = getelementptr %struct.QRectF* %tmp.upgrd.1, i32 0, i32 3		; <double*> [#uses=1]
+	%tmp137 = load double* %tmp136		; <double> [#uses=1]
+	store double %tmp137, double* %tmp135
+	%tmp138 = call double @_ZNK6QRectF6heightEv( %struct.QRectF* %body )		; <double> [#uses=1]
+	%tmp139 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	%tmp140 = sub double %tmp138, %tmp139		; <double> [#uses=1]
+	%tmp142 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont141 unwind label %cleanup192		; <%struct.QPaintDevice*> [#uses=1]
+invcont141:		; preds = %invcont124
+	invoke void @_ZNK13QTextDocument11defaultFontEv( %struct.QFont* sret  %tmp.upgrd.3, %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont144 unwind label %cleanup192
+invcont144:		; preds = %invcont141
+	invoke void @_ZN12QFontMetricsC1ERK5QFontP12QPaintDevice( %struct.QFontMetrics* %tmp.upgrd.2, %struct.QFont* %tmp.upgrd.3, %struct.QPaintDevice* %tmp142 )
+			to label %invcont146 unwind label %cleanup173
+invcont146:		; preds = %invcont144
+	%tmp149 = invoke i32 @_ZNK12QFontMetrics6ascentEv( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %invcont148 unwind label %cleanup168		; <i32> [#uses=1]
+invcont148:		; preds = %invcont146
+	%tmp149.upgrd.21 = sitofp i32 %tmp149 to double		; <double> [#uses=1]
+	%tmp150 = add double %tmp140, %tmp149.upgrd.21		; <double> [#uses=1]
+	%tmp152 = invoke %struct.QPaintDevice* @_ZNK8QPainter6deviceEv( %struct.QPainter* %p )
+			to label %invcont151 unwind label %cleanup168		; <%struct.QPaintDevice*> [#uses=1]
+invcont151:		; preds = %invcont148
+	%tmp154 = invoke i32 @_ZNK12QPaintDevice11logicalDpiYEv( %struct.QPaintDevice* %tmp152 )
+			to label %invcont153 unwind label %cleanup168		; <i32> [#uses=1]
+invcont153:		; preds = %invcont151
+	%tmp155 = mul i32 %tmp154, 5		; <i32> [#uses=1]
+	%tmp156 = sdiv i32 %tmp155, 72		; <i32> [#uses=1]
+	%tmp156.upgrd.22 = sitofp i32 %tmp156 to double		; <double> [#uses=1]
+	%tmp157 = add double %tmp150, %tmp156.upgrd.22		; <double> [#uses=1]
+	%tmp158 = call double @_ZNK6QRectF5widthEv( %struct.QRectF* %body )		; <double> [#uses=1]
+	%tmp159 = sitofp i32 %tmp109.upgrd.17 to double		; <double> [#uses=1]
+	%tmp160 = sub double %tmp158, %tmp159		; <double> [#uses=1]
+	call void @_ZN7QPointFC1Edd( %struct.QPointF* %tmp2, double %tmp160, double %tmp157 )
+	%tmp161 = getelementptr %struct.QPointF* %pageNumberPos, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp162 = getelementptr %struct.QPointF* %tmp2, i32 0, i32 0		; <double*> [#uses=1]
+	%tmp163 = load double* %tmp162		; <double> [#uses=1]
+	store double %tmp163, double* %tmp161
+	%tmp164 = getelementptr %struct.QPointF* %pageNumberPos, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp165 = getelementptr %struct.QPointF* %tmp2, i32 0, i32 1		; <double*> [#uses=1]
+	%tmp166 = load double* %tmp165		; <double> [#uses=1]
+	store double %tmp166, double* %tmp164
+	invoke void @_ZN12QFontMetricsD1Ev( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %cleanup171 unwind label %cleanup173
+cleanup168:		; preds = %invcont151, %invcont148, %invcont146
+	invoke void @_ZN12QFontMetricsD1Ev( %struct.QFontMetrics* %tmp.upgrd.2 )
+			to label %cleanup173 unwind label %cleanup173
+cleanup171:		; preds = %invcont153
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %tmp.upgrd.3 )
+			to label %finally170 unwind label %cleanup192
+cleanup173:		; preds = %cleanup168, %cleanup168, %invcont153, %invcont144
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %tmp.upgrd.3 )
+			to label %cleanup192 unwind label %cleanup192
+finally170:		; preds = %cleanup171
+	invoke void @_ZNK13QTextDocument11defaultFontEv( %struct.QFont* sret  %font, %struct.QAbstractTextDocumentLayout* %tmp95 )
+			to label %invcont177 unwind label %cleanup192
+invcont177:		; preds = %finally170
+	invoke void @_ZN5QFont12setPointSizeEi( %struct.QFont* %font, i32 10 )
+			to label %invcont179 unwind label %cleanup187
+invcont179:		; preds = %invcont177
+	invoke void @_ZN13QTextDocument14setDefaultFontERK5QFont( %struct.QAbstractTextDocumentLayout* %tmp95, %struct.QFont* %font )
+			to label %invcont181 unwind label %cleanup187
+invcont181:		; preds = %invcont179
+	call void @_ZNK6QRectF4sizeEv( %struct.QPointF* sret  %tmp3, %struct.QRectF* %body )
+	invoke void @_ZN13QTextDocument11setPageSizeERK6QSizeF( %struct.QAbstractTextDocumentLayout* %tmp95, %struct.QPointF* %tmp3 )
+			to label %cleanup185 unwind label %cleanup187
+cleanup185:		; preds = %invcont181
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %font )
+			to label %cleanup190 unwind label %cleanup192
+cleanup187:		; preds = %invcont181, %invcont179, %invcont177
+	invoke void @_ZN5QFontD1Ev( %struct.QFont* %font )
+			to label %cleanup192 unwind label %cleanup192
+cleanup190:		; preds = %cleanup185
+	invoke void @_ZN16QTextFrameFormatD1Ev( %struct.QTextBlockFormat* %fmt )
+			to label %cond_next194 unwind label %cleanup329
+cleanup192:		; preds = %cleanup187, %cleanup187, %cleanup185, %finally170, %cleanup173, %cleanup173, %cleanup171, %invcont141, %invcont124, %invcont122, %invcont120, %invcont118, %invcont117, %invcont114, %invcont111
+	invoke void @_ZN16QTextFrameFormatD1Ev( %struct.QTextBlockFormat* %fmt )
+			to label %cleanup329 unwind label %cleanup329
+cond_next194:		; preds = %cleanup190, %invcont83
+	%clonedDoc.1 = phi %struct.QAbstractTextDocumentLayout* [ null, %invcont83 ], [ %tmp95, %cleanup190 ]		; <%struct.QAbstractTextDocumentLayout*> [#uses=3]
+	%doc.1 = phi %struct.QAbstractTextDocumentLayout* [ %this, %invcont83 ], [ %tmp95, %cleanup190 ]		; <%struct.QAbstractTextDocumentLayout*> [#uses=2]
+	%tmp197 = invoke i1 @_ZNK8QPrinter13collateCopiesEv( %struct.QPrinter* %printer )
+			to label %invcont196 unwind label %cleanup329		; <i1> [#uses=1]
+invcont196:		; preds = %cond_next194
+	br i1 %tmp197, label %cond_true200, label %cond_false204
+cond_true200:		; preds = %invcont196
+	%tmp2000 = load double* %foo
+	store double %tmp2000, double* %bar
+	%tmp203 = invoke i32 @_ZNK8QPrinter9numCopiesEv( %struct.QPrinter* %printer )
+			to label %cond_next208 unwind label %cleanup329		; <i32> [#uses=1]
+cond_false204:		; preds = %invcont196
+	%tmp2001 = load double* %foo
+	store double %tmp2001, double* %bar
+	%tmp207 = invoke i32 @_ZNK8QPrinter9numCopiesEv( %struct.QPrinter* %printer )
+			to label %cond_next208 unwind label %cleanup329		; <i32> [#uses=1]
+cond_next208:		; preds = %invcont206, %invcont202
+	%pageCopies.0 = phi i32 [ %tmp203, %cond_true200 ], [ 1, %cond_false204 ]		; <i32> [#uses=2]
+	%docCopies.0 = phi i32 [ 1, %cond_true200 ], [ %tmp207, %cond_false204 ]		; <i32> [#uses=2]
+	%tmp211 = invoke i32 @_ZNK8QPrinter8fromPageEv( %struct.QPrinter* %printer )
+			to label %invcont210 unwind label %cleanup329		; <i32> [#uses=3]
+invcont210:		; preds = %cond_next208
+	%tmp214 = invoke i32 @_ZNK8QPrinter6toPageEv( %struct.QPrinter* %printer )
+			to label %invcont213 unwind label %cleanup329		; <i32> [#uses=3]
+invcont213:		; preds = %invcont210
+	%tmp216 = icmp eq i32 %tmp211, 0		; <i1> [#uses=1]
+	br i1 %tmp216, label %cond_true217, label %cond_next225
+cond_true217:		; preds = %invcont213
+	%tmp219 = icmp eq i32 %tmp214, 0		; <i1> [#uses=1]
+	br i1 %tmp219, label %cond_true220, label %cond_next225
+cond_true220:		; preds = %cond_true217
+	%tmp223 = invoke i32 @_ZNK13QTextDocument9pageCountEv( %struct.QAbstractTextDocumentLayout* %doc.1 )
+			to label %invcont222 unwind label %cleanup329		; <i32> [#uses=1]
+invcont222:		; preds = %cond_true220
+	br label %cond_next225
+cond_next225:		; preds = %invcont222, %cond_true217, %invcont213
+	%toPage.1 = phi i32 [ %tmp223, %invcont222 ], [ %tmp214, %cond_true217 ], [ %tmp214, %invcont213 ]		; <i32> [#uses=2]
+	%fromPage.1 = phi i32 [ 1, %invcont222 ], [ %tmp211, %cond_true217 ], [ %tmp211, %invcont213 ]		; <i32> [#uses=2]
+	%tmp.page = invoke i32 @_ZNK8QPrinter9pageOrderEv( %struct.QPrinter* %printer )
+			to label %invcont227 unwind label %cleanup329		; <i32> [#uses=1]
+invcont227:		; preds = %cond_next225
+	%tmp228 = icmp eq i32 %tmp.page, 1		; <i1> [#uses=1]
+	br i1 %tmp228, label %cond_true230, label %cond_next234
+cond_true230:		; preds = %invcont227
+	br label %cond_next234
+cond_next234:		; preds = %cond_true230, %invcont227
+	%ascending.1 = phi i1 [ false, %cond_true230 ], [ true, %invcont227 ]		; <i1> [#uses=1]
+	%toPage.2 = phi i32 [ %fromPage.1, %cond_true230 ], [ %toPage.1, %invcont227 ]		; <i32> [#uses=1]
+	%fromPage.2 = phi i32 [ %toPage.1, %cond_true230 ], [ %fromPage.1, %invcont227 ]		; <i32> [#uses=1]
+	br label %bb309
+bb237:		; preds = %cond_true313, %cond_next293
+	%iftmp.410.4 = phi i1 [ %iftmp.410.5, %cond_true313 ], [ %iftmp.410.1, %cond_next293 ]		; <i1> [#uses=1]
+	%page.4 = phi i32 [ %fromPage.2, %cond_true313 ], [ %page.3, %cond_next293 ]		; <i32> [#uses=4]
+	br label %bb273
+invcont240:		; preds = %cond_true277
+	%tmp242 = icmp eq i32 %tmp241, 2		; <i1> [#uses=1]
+	br i1 %tmp242, label %bb252, label %cond_next244
+cond_next244:		; preds = %invcont240
+	%tmp247 = invoke i32 @_ZNK8QPrinter12printerStateEv( %struct.QPrinter* %printer )
+			to label %invcont246 unwind label %cleanup329		; <i32> [#uses=1]
+invcont246:		; preds = %cond_next244
+	%tmp248 = icmp eq i32 %tmp247, 3		; <i1> [#uses=1]
+	br i1 %tmp248, label %bb252, label %bb253
+bb252:		; preds = %invcont246, %invcont240
+	br label %bb254
+bb253:		; preds = %invcont246
+	br label %bb254
+bb254:		; preds = %bb253, %bb252
+	%iftmp.410.0 = phi i1 [ true, %bb252 ], [ false, %bb253 ]		; <i1> [#uses=2]
+	br i1 %iftmp.410.0, label %UserCanceled, label %cond_next258
+cond_next258:		; preds = %bb254
+	invoke fastcc void @_Z9printPageiP8QPainterPK13QTextDocumentRK6QRectFRK7QPointF( i32 %page.4, %struct.QPainter* %p, %struct.QAbstractTextDocumentLayout* %doc.1, %struct.QRectF* %body, %struct.QPointF* %pageNumberPos )
+			to label %invcont261 unwind label %cleanup329
+invcont261:		; preds = %cond_next258
+	%tmp263 = add i32 %pageCopies.0, -1		; <i32> [#uses=1]
+	%tmp265 = icmp sgt i32 %tmp263, %j.4		; <i1> [#uses=1]
+	br i1 %tmp265, label %cond_true266, label %cond_next270
+cond_true266:		; preds = %invcont261
+	%tmp269 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %cond_next270 unwind label %cleanup329		; <i1> [#uses=0]
+cond_next270:		; preds = %cond_true266, %invcont261
+	%tmp272 = add i32 %j.4, 1		; <i32> [#uses=1]
+	br label %bb273
+bb273:		; preds = %cond_next270, %bb237
+	%iftmp.410.1 = phi i1 [ %iftmp.410.4, %bb237 ], [ %iftmp.410.0, %cond_next270 ]		; <i1> [#uses=2]
+	%j.4 = phi i32 [ 0, %bb237 ], [ %tmp272, %cond_next270 ]		; <i32> [#uses=3]
+	%tmp276 = icmp slt i32 %j.4, %pageCopies.0		; <i1> [#uses=1]
+	br i1 %tmp276, label %cond_true277, label %bb280
+cond_true277:		; preds = %bb273
+	%tmp241 = invoke i32 @_ZNK8QPrinter12printerStateEv( %struct.QPrinter* %printer )
+			to label %invcont240 unwind label %cleanup329		; <i32> [#uses=1]
+bb280:		; preds = %bb273
+	%tmp283 = icmp eq i32 %page.4, %toPage.2		; <i1> [#uses=1]
+	br i1 %tmp283, label %bb297, label %cond_next285
+cond_next285:		; preds = %bb280
+	br i1 %ascending.1, label %cond_true287, label %cond_false290
+cond_true287:		; preds = %cond_next285
+	%tmp289 = add i32 %page.4, 1		; <i32> [#uses=1]
+	br label %cond_next293
+cond_false290:		; preds = %cond_next285
+	%tmp292 = add i32 %page.4, -1		; <i32> [#uses=1]
+	br label %cond_next293
+cond_next293:		; preds = %cond_false290, %cond_true287
+	%page.3 = phi i32 [ %tmp289, %cond_true287 ], [ %tmp292, %cond_false290 ]		; <i32> [#uses=1]
+	%tmp296 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %bb237 unwind label %cleanup329		; <i1> [#uses=0]
+bb297:		; preds = %bb280
+	%tmp299 = add i32 %docCopies.0, -1		; <i32> [#uses=1]
+	%tmp301 = icmp sgt i32 %tmp299, %i.1		; <i1> [#uses=1]
+	br i1 %tmp301, label %cond_true302, label %cond_next306
+cond_true302:		; preds = %bb297
+	%tmp305 = invoke i1 @_ZN8QPrinter7newPageEv( %struct.QPrinter* %printer )
+			to label %cond_next306 unwind label %cleanup329		; <i1> [#uses=0]
+cond_next306:		; preds = %cond_true302, %bb297
+	%tmp308 = add i32 %i.1, 1		; <i32> [#uses=1]
+	br label %bb309
+bb309:		; preds = %cond_next306, %cond_next234
+	%iftmp.410.5 = phi i1 [ undef, %cond_next234 ], [ %iftmp.410.1, %cond_next306 ]		; <i1> [#uses=1]
+	%i.1 = phi i32 [ 0, %cond_next234 ], [ %tmp308, %cond_next306 ]		; <i32> [#uses=3]
+	%tmp312 = icmp slt i32 %i.1, %docCopies.0		; <i1> [#uses=1]
+	br i1 %tmp312, label %cond_true313, label %UserCanceled
+cond_true313:		; preds = %bb309
+	br label %bb237
+UserCanceled:		; preds = %bb309, %bb254
+	%tmp318 = icmp eq %struct.QAbstractTextDocumentLayout* %clonedDoc.1, null		; <i1> [#uses=1]
+	br i1 %tmp318, label %cleanup327, label %cond_true319
+cond_true319:		; preds = %UserCanceled
+	%tmp.upgrd.23 = getelementptr %struct.QAbstractTextDocumentLayout* %clonedDoc.1, i32 0, i32 0, i32 0		; <i32 (...)***> [#uses=1]
+	%tmp.upgrd.24 = load i32 (...)*** %tmp.upgrd.23		; <i32 (...)**> [#uses=1]
+	%tmp322 = getelementptr i32 (...)** %tmp.upgrd.24, i32 4		; <i32 (...)**> [#uses=1]
+	%tmp.upgrd.25 = load i32 (...)** %tmp322		; <i32 (...)*> [#uses=1]
+	%tmp.upgrd.26 = bitcast i32 (...)* %tmp.upgrd.25 to void (%struct.QAbstractTextDocumentLayout*)*		; <void (%struct.QAbstractTextDocumentLayout*)*> [#uses=1]
+	invoke void %tmp.upgrd.26( %struct.QAbstractTextDocumentLayout* %clonedDoc.1 )
+			to label %cleanup327 unwind label %cleanup329
+cleanup327:		; preds = %cond_true319, %UserCanceled
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	ret void
+cleanup328:		; preds = %invcont
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	ret void
+cleanup329:		; preds = %cond_true319, %cond_true302, %cond_next293, %cond_true277, %cond_true266, %cond_next258, %cond_next244, %cond_next225, %cond_true220, %invcont210, %cond_next208, %cond_false204, %cond_true200, %cond_next194, %cleanup192, %cleanup192, %cleanup190, %invcont106, %invcont104, %invcont103, %invcont100, %invcont98, %invcont94, %cond_false, %invcont83, %invcont79, %invcont57, %invcont51, %invcont45, %cond_next42, %invcont37, %cond_true35, %invcont29, %invcont25, %cond_true24, %cond_next, %entry
+	call void @_ZN8QPainterD1Ev( %struct.QPainter* %p )
+	unwind
+}
+
+declare void @_ZN6QSizeFC1Edd(%struct.QPointF*, double, double)
+
+declare i1 @_ZNK6QSizeF7isValidEv(%struct.QPointF*)
+
+declare double @_ZNK6QSizeF5widthEv(%struct.QPointF*)
+
+declare double @_ZNK6QSizeF6heightEv(%struct.QPointF*)
+
+declare double* @_ZN6QSizeF6rwidthEv(%struct.QPointF*)
+
+declare double* @_ZN6QSizeF7rheightEv(%struct.QPointF*)
+
+declare %struct.QTextDocumentPrivate* @_ZNK13QTextDocument6d_funcEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN7QPointFC1Ev(%struct.QPointF*)
+
+declare void @_ZN7QPointFC1Edd(%struct.QPointF*, double, double)
+
+declare void @_ZN16QTextFrameFormat9setMarginEd(%struct.QTextBlockFormat*, double)
+
+declare void @_ZN6QRectFC1Edddd(%struct.QRectF*, double, double, double, double)
+
+declare void @_ZN6QRectFC1ERK7QPointFRK6QSizeF(%struct.QRectF*, %struct.QPointF*, %struct.QPointF*)
+
+declare double @_ZNK6QRectF5widthEv(%struct.QRectF*)
+
+declare double @_ZNK6QRectF6heightEv(%struct.QRectF*)
+
+declare void @_ZNK6QRectF4sizeEv(%struct.QPointF*, %struct.QRectF*)
+
+declare void @_ZN16QTextFrameFormatD1Ev(%struct.QTextBlockFormat*)
+
+declare void @_ZNK10QTextFrame11frameFormatEv(%struct.QTextBlockFormat*, %struct.QTextBlockGroup*)
+
+declare void @_ZN10QTextFrame14setFrameFormatERK16QTextFrameFormat(%struct.QTextBlockGroup*, %struct.QTextBlockFormat*)
+
+declare i32 @_ZNK12QPaintDevice5widthEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice6heightEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice11logicalDpiXEv(%struct.QPaintDevice*)
+
+declare i32 @_ZNK12QPaintDevice11logicalDpiYEv(%struct.QPaintDevice*)
+
+declare %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument5cloneEP7QObject(%struct.QAbstractTextDocumentLayout*, %struct.QObject*)
+
+declare void @_ZN5QFontD1Ev(%struct.QFont*)
+
+declare %struct.QAbstractTextDocumentLayout* @_ZNK13QTextDocument14documentLayoutEv(%struct.QAbstractTextDocumentLayout*)
+
+declare %struct.QTextBlockGroup* @_ZNK13QTextDocument9rootFrameEv(%struct.QAbstractTextDocumentLayout*)
+
+declare i32 @_ZNK13QTextDocument9pageCountEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZNK13QTextDocument11defaultFontEv(%struct.QFont*, %struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN13QTextDocument14setDefaultFontERK5QFont(%struct.QAbstractTextDocumentLayout*, %struct.QFont*)
+
+declare void @_ZN13QTextDocument11setPageSizeERK6QSizeF(%struct.QAbstractTextDocumentLayout*, %struct.QPointF*)
+
+declare void @_Z9printPageiP8QPainterPK13QTextDocumentRK6QRectFRK7QPointF(i32, %struct.QPainter*, %struct.QAbstractTextDocumentLayout*, %struct.QRectF*, %struct.QPointF*)
+
+declare void @_ZN12QFontMetricsD1Ev(%struct.QFontMetrics*)
+
+declare void @_ZN8QPainterC1EP12QPaintDevice(%struct.QPainter*, %struct.QPaintDevice*)
+
+declare i1 @_ZNK8QPainter8isActiveEv(%struct.QPainter*)
+
+declare i32 @_Z13qt_defaultDpiv()
+
+declare %struct.QPaintDevice* @_ZNK27QAbstractTextDocumentLayout11paintDeviceEv(%struct.QAbstractTextDocumentLayout*)
+
+declare void @_ZN8QPainter5scaleEdd(%struct.QPainter*, double, double)
+
+declare %struct.QPaintDevice* @_ZNK8QPainter6deviceEv(%struct.QPainter*)
+
+declare void @_ZN27QAbstractTextDocumentLayout14setPaintDeviceEP12QPaintDevice(%struct.QAbstractTextDocumentLayout*, %struct.QPaintDevice*)
+
+declare void @_ZN12QFontMetricsC1ERK5QFontP12QPaintDevice(%struct.QFontMetrics*, %struct.QFont*, %struct.QPaintDevice*)
+
+declare i32 @_ZNK12QFontMetrics6ascentEv(%struct.QFontMetrics*)
+
+declare void @_ZN5QFont12setPointSizeEi(%struct.QFont*, i32)
+
+declare i1 @_ZNK8QPrinter13collateCopiesEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter9numCopiesEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter8fromPageEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter6toPageEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter9pageOrderEv(%struct.QPrinter*)
+
+declare i32 @_ZNK8QPrinter12printerStateEv(%struct.QPrinter*)
+
+declare i1 @_ZN8QPrinter7newPageEv(%struct.QPrinter*)
+
+declare void @_ZN8QPainterD1Ev(%struct.QPainter*)
diff --git a/test/Transforms/SimplifyCFG/BrUnwind.ll b/test/Transforms/SimplifyCFG/BrUnwind.ll
new file mode 100644
index 0000000..b19a27d
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/BrUnwind.ll
@@ -0,0 +1,15 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN: not grep {br label}
+
+define void @test(i1 %C) {
+        br i1 %C, label %A, label %B
+A:              ; preds = %0
+        call void @test( i1 %C )
+        br label %X
+B:              ; preds = %0
+        call void @test( i1 %C )
+        br label %X
+X:              ; preds = %B, %A
+        unwind
+}
+
diff --git a/test/Transforms/SimplifyCFG/DeadSetCC.ll b/test/Transforms/SimplifyCFG/DeadSetCC.ll
new file mode 100644
index 0000000..8339462
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/DeadSetCC.ll
@@ -0,0 +1,28 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep {icmp eq}
+
+; Check that simplifycfg deletes a dead 'seteq' instruction when it
+; folds a conditional branch into a switch instruction.
+
+declare void @foo()
+
+declare void @bar()
+
+define void @testcfg(i32 %V) {
+        %C = icmp eq i32 %V, 18         ; <i1> [#uses=1]
+        %D = icmp eq i32 %V, 180                ; <i1> [#uses=1]
+        %E = or i1 %C, %D               ; <i1> [#uses=1]
+        br i1 %E, label %L1, label %Sw
+Sw:             ; preds = %0
+        switch i32 %V, label %L1 [
+                 i32 15, label %L2
+                 i32 16, label %L2
+        ]
+L1:             ; preds = %Sw, %0
+        call void @foo( )
+        ret void
+L2:             ; preds = %Sw, %Sw
+        call void @bar( )
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll b/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll
new file mode 100644
index 0000000..912c755
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll
@@ -0,0 +1,18 @@
+; Test merging of blocks with phi nodes.
+;
+; RUN: opt < %s -simplifycfg -S | not grep N:
+;
+
+define i32 @test(i1 %a) {
+Q:
+        br i1 %a, label %N, label %M
+N:              ; preds = %Q
+        br label %M
+M:              ; preds = %N, %Q
+        ; It's ok to merge N and M because the incoming values for W are the
+        ; same for both cases...
+        %W = phi i32 [ 2, %N ], [ 2, %Q ]               ; <i32> [#uses=1]
+        %R = add i32 %W, 1              ; <i32> [#uses=1]
+        ret i32 %R
+}
+
diff --git a/test/Transforms/SimplifyCFG/HoistCode.ll b/test/Transforms/SimplifyCFG/HoistCode.ll
new file mode 100644
index 0000000..9697e56
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/HoistCode.ll
@@ -0,0 +1,11 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define void @foo(i1 %C, i32* %P) {
+        br i1 %C, label %T, label %F
+T:              ; preds = %0
+        store i32 7, i32* %P
+        ret void
+F:              ; preds = %0
+        store i32 7, i32* %P
+        ret void
+}
diff --git a/test/Transforms/SimplifyCFG/MagicPointer.ll b/test/Transforms/SimplifyCFG/MagicPointer.ll
new file mode 100644
index 0000000..54e5b14
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/MagicPointer.ll
@@ -0,0 +1,76 @@
+; Test that simplifycfg can create switch instructions from constant pointers.
+;
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+; CHECK: switch i64 %magicptr
+; CHECK: i64 0, label
+; CHECK: i64 1, label
+; CHECK: i64 2, label
+; CHECK: i64 3, label
+; CHECK: i64 4, label
+; CHECK-NOT: br
+; CHECK: }
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.0.0"
+
+@.str = private constant [5 x i8] c"null\00"      ; <[5 x i8]*> [#uses=2]
+@.str1 = private constant [4 x i8] c"one\00"      ; <[4 x i8]*> [#uses=2]
+@.str2 = private constant [4 x i8] c"two\00"      ; <[4 x i8]*> [#uses=2]
+@.str3 = private constant [5 x i8] c"four\00"     ; <[5 x i8]*> [#uses=2]
+
+define void @f(i8* %x) nounwind ssp {
+entry:
+  %tobool = icmp eq i8* %x, null                  ; <i1> [#uses=1]
+  br i1 %tobool, label %if.then, label %if.else
+
+if.then:                                          ; preds = %entry
+  %call = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
+  br label %if.end21
+
+if.else:                                          ; preds = %entry
+  %cmp = icmp eq i8* %x, inttoptr (i64 1 to i8*)  ; <i1> [#uses=1]
+  br i1 %cmp, label %if.then2, label %if.else4
+
+if.then2:                                         ; preds = %if.else
+  %call3 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str1, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
+  br label %if.end20
+
+if.else4:                                         ; preds = %if.else
+  %cmp6 = icmp eq i8* %x, inttoptr (i64 2 to i8*) ; <i1> [#uses=1]
+  br i1 %cmp6, label %if.then9, label %lor.lhs.false
+
+lor.lhs.false:                                    ; preds = %if.else4
+  %cmp8 = icmp eq i8* %x, inttoptr (i64 3 to i8*) ; <i1> [#uses=1]
+  br i1 %cmp8, label %if.then9, label %if.else11
+
+if.then9:                                         ; preds = %lor.lhs.false, %if.else4
+  %call10 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str2, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
+  br label %if.end19
+
+if.else11:                                        ; preds = %lor.lhs.false
+  %cmp13 = icmp eq i8* %x, inttoptr (i64 4 to i8*) ; <i1> [#uses=1]
+  br i1 %cmp13, label %if.then14, label %if.else16
+
+if.then14:                                        ; preds = %if.else11
+  %call15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str3, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
+  br label %if.end
+
+if.else16:                                        ; preds = %if.else11
+  %call18 = call i32 @puts(i8* %x) nounwind       ; <i32> [#uses=0]
+  br label %if.end
+
+if.end:                                           ; preds = %if.else16, %if.then14
+  br label %if.end19
+
+if.end19:                                         ; preds = %if.end, %if.then9
+  br label %if.end20
+
+if.end20:                                         ; preds = %if.end19, %if.then2
+  br label %if.end21
+
+if.end21:                                         ; preds = %if.end20, %if.then
+  ret void
+}
+
+declare i32 @puts(i8*)
diff --git a/test/Transforms/SimplifyCFG/PhiBlockMerge.ll b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
new file mode 100644
index 0000000..a648efd
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
@@ -0,0 +1,22 @@
+; Test merging of blocks that only have PHI nodes in them
+;
+; RUN: opt < %s -simplifycfg -S | not grep N:
+;
+
+define i32 @test(i1 %a, i1 %b) {
+; <label>:0
+        br i1 %a, label %M, label %O
+O:              ; preds = %0
+        br i1 %b, label %N, label %Q
+Q:              ; preds = %O
+        br label %N
+N:              ; preds = %Q, %O
+        ; This block should be foldable into M
+        %Wp = phi i32 [ 0, %O ], [ 1, %Q ]              ; <i32> [#uses=1]
+        br label %M
+M:              ; preds = %N, %0
+        %W = phi i32 [ %Wp, %N ], [ 2, %0 ]             ; <i32> [#uses=1]
+        %R = add i32 %W, 1              ; <i32> [#uses=1]
+        ret i32 %R
+}
+
diff --git a/test/Transforms/SimplifyCFG/PhiBlockMerge2.ll b/test/Transforms/SimplifyCFG/PhiBlockMerge2.ll
new file mode 100644
index 0000000..fb5d600
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/PhiBlockMerge2.ll
@@ -0,0 +1,27 @@
+; Test merging of blocks that only have PHI nodes in them.  This tests the case
+; where the mergedinto block doesn't have any PHI nodes, and is in fact 
+; dominated by the block-to-be-eliminated
+;
+; RUN: opt < %s -simplifycfg -S | not grep N:
+;
+
+declare i1 @foo()
+
+define i32 @test(i1 %a, i1 %b) {
+        %c = call i1 @foo()
+	br i1 %c, label %N, label %P
+P:
+        %d = call i1 @foo()
+	br i1 %d, label %N, label %Q
+Q:
+	br label %N
+N:
+	%W = phi i32 [0, %0], [1, %Q], [2, %P]
+	; This block should be foldable into M
+	br label %M
+
+M:
+	%R = add i32 %W, 1
+	ret i32 %R
+}
+
diff --git a/test/Transforms/SimplifyCFG/PhiEliminate.ll b/test/Transforms/SimplifyCFG/PhiEliminate.ll
new file mode 100644
index 0000000..73cf466
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/PhiEliminate.ll
@@ -0,0 +1,41 @@
+; Test a bunch of cases where the cfg simplification code should
+; be able to fold PHI nodes into computation in common cases.  Folding the PHI
+; nodes away allows the branches to be eliminated, performing a simple form of
+; 'if conversion'.
+
+; RUN: opt < %s -simplifycfg -S > %t.xform
+; RUN:   not grep phi %t.xform 
+; RUN:   grep ret %t.xform
+
+declare void @use(i1)
+
+declare void @use.upgrd.1(i32)
+
+define void @test2(i1 %c, i1 %d, i32 %V, i32 %V2) {
+; <label>:0
+        br i1 %d, label %X, label %F
+X:              ; preds = %0
+        br i1 %c, label %T, label %F
+T:              ; preds = %X
+        br label %F
+F:              ; preds = %T, %X, %0
+        %B1 = phi i1 [ true, %0 ], [ false, %T ], [ false, %X ]         ; <i1> [#uses=1]
+        %I7 = phi i32 [ %V, %0 ], [ %V2, %T ], [ %V2, %X ]              ; <i32> [#uses=1]
+        call void @use( i1 %B1 )
+        call void @use.upgrd.1( i32 %I7 )
+        ret void
+}
+
+define void @test(i1 %c, i32 %V, i32 %V2) {
+; <label>:0
+        br i1 %c, label %T, label %F
+T:              ; preds = %0
+        br label %F
+F:              ; preds = %T, %0
+        %B1 = phi i1 [ true, %0 ], [ false, %T ]                ; <i1> [#uses=1]
+        %I6 = phi i32 [ %V, %0 ], [ 0, %T ]             ; <i32> [#uses=1]
+        call void @use( i1 %B1 )
+        call void @use.upgrd.1( i32 %I6 )
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/PhiEliminate2.ll b/test/Transforms/SimplifyCFG/PhiEliminate2.ll
new file mode 100644
index 0000000..c0f6781
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/PhiEliminate2.ll
@@ -0,0 +1,14 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i32 @test(i1 %C, i32 %V1, i32 %V2) {
+entry:
+        br i1 %C, label %then, label %Cont
+then:           ; preds = %entry
+        %V3 = or i32 %V2, %V1           ; <i32> [#uses=1]
+        br label %Cont
+Cont:           ; preds = %then, %entry
+        %V4 = phi i32 [ %V1, %entry ], [ %V3, %then ]           ; <i32> [#uses=0]
+        call i32 @test( i1 false, i32 0, i32 0 )                ; <i32>:0 [#uses=0]
+        ret i32 %V1
+}
+
diff --git a/test/Transforms/SimplifyCFG/PhiNoEliminate.ll b/test/Transforms/SimplifyCFG/PhiNoEliminate.ll
new file mode 100644
index 0000000..e9902e0
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/PhiNoEliminate.ll
@@ -0,0 +1,27 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep select
+
+;; The PHI node in this example should not be turned into a select, as we are
+;; not able to ifcvt the entire block.  As such, converting to a select just 
+;; introduces inefficiency without saving copies.
+
+define i32 @bar(i1 %C) {
+entry:
+        br i1 %C, label %then, label %endif
+then:           ; preds = %entry
+        %tmp.3 = call i32 @qux( )               ; <i32> [#uses=0]
+        br label %endif
+endif:          ; preds = %then, %entry
+        %R = phi i32 [ 123, %entry ], [ 12312, %then ]          ; <i32> [#uses=1]
+        ;; stuff to disable tail duplication
+        call i32 @qux( )                ; <i32>:0 [#uses=0]
+        call i32 @qux( )                ; <i32>:1 [#uses=0]
+        call i32 @qux( )                ; <i32>:2 [#uses=0]
+        call i32 @qux( )                ; <i32>:3 [#uses=0]
+        call i32 @qux( )                ; <i32>:4 [#uses=0]
+        call i32 @qux( )                ; <i32>:5 [#uses=0]
+        call i32 @qux( )                ; <i32>:6 [#uses=0]
+        ret i32 %R
+}
+
+declare i32 @qux()
diff --git a/test/Transforms/SimplifyCFG/SpeculativeExec.ll b/test/Transforms/SimplifyCFG/SpeculativeExec.ll
new file mode 100644
index 0000000..5cfc77c
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/SpeculativeExec.ll
@@ -0,0 +1,21 @@
+; RUN: opt < %s -simplifycfg  -S | grep select
+; RUN: opt < %s -simplifycfg  -S | grep br | count 2
+
+define i32 @t2(i32 %a, i32 %b, i32 %c) nounwind  {
+entry:
+        %tmp1 = icmp eq i32 %b, 0
+        br i1 %tmp1, label %bb1, label %bb3
+
+bb1:            ; preds = %entry
+	%tmp2 = icmp sgt i32 %c, 1
+	br i1 %tmp2, label %bb2, label %bb3
+
+bb2:		; preds = bb1
+	%tmp3 = add i32 %a, 1
+	br label %bb3
+
+bb3:		; preds = %bb2, %entry
+	%tmp4 = phi i32 [ %b, %entry ], [ %a, %bb1 ], [ %tmp3, %bb2 ]
+        %tmp5 = sub i32 %tmp4, 1
+	ret i32 %tmp5
+}
diff --git a/test/Transforms/SimplifyCFG/UncondBranchToReturn.ll b/test/Transforms/SimplifyCFG/UncondBranchToReturn.ll
new file mode 100644
index 0000000..bf9d953
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/UncondBranchToReturn.ll
@@ -0,0 +1,33 @@
+; The unify-function-exit-nodes pass often makes basic blocks that just contain
+; a PHI node and a return.  Make sure the simplify cfg can straighten out this
+; important case.  This is basically the most trivial form of tail-duplication.
+
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:    not grep {br label}
+
+define i32 @test(i1 %B, i32 %A, i32 %B.upgrd.1) {
+        br i1 %B, label %T, label %F
+T:              ; preds = %0
+        br label %ret
+F:              ; preds = %0
+        br label %ret
+ret:            ; preds = %F, %T
+        %X = phi i32 [ %A, %F ], [ %B.upgrd.1, %T ]             ; <i32> [#uses=1]
+        ret i32 %X
+}
+
+
+; Make sure it's willing to move unconditional branches to return instructions
+; as well, even if the return block is shared and the source blocks are
+; non-empty.
+define i32 @test2(i1 %B, i32 %A, i32 %B.upgrd.2) {
+        br i1 %B, label %T, label %F
+T:              ; preds = %0
+        call i32 @test( i1 true, i32 5, i32 8 )         ; <i32>:1 [#uses=0]
+        br label %ret
+F:              ; preds = %0
+        call i32 @test( i1 true, i32 5, i32 8 )         ; <i32>:2 [#uses=0]
+        br label %ret
+ret:            ; preds = %F, %T
+        ret i32 %A
+}
diff --git a/test/Transforms/SimplifyCFG/UnreachableEliminate.ll b/test/Transforms/SimplifyCFG/UnreachableEliminate.ll
new file mode 100644
index 0000000..7133d98
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/UnreachableEliminate.ll
@@ -0,0 +1,33 @@
+; RUN: opt < %s -simplifycfg -S | not grep unreachable
+
+define void @test1(i1 %C, i1* %BP) {
+        br i1 %C, label %T, label %F
+T:              ; preds = %0
+        store i1 %C, i1* %BP
+        unreachable
+F:              ; preds = %0
+        ret void
+}
+
+define void @test2() {
+        invoke void @test2( )
+                        to label %N unwind label %U
+U:              ; preds = %0
+        unreachable
+N:              ; preds = %0
+        ret void
+}
+
+define i32 @test3(i32 %v) {
+        switch i32 %v, label %default [
+                 i32 1, label %U
+                 i32 2, label %T
+        ]
+default:                ; preds = %0
+        ret i32 1
+U:              ; preds = %0
+        unreachable
+T:              ; preds = %0
+        ret i32 2
+}
+
diff --git a/test/Transforms/SimplifyCFG/basictest.ll b/test/Transforms/SimplifyCFG/basictest.ll
new file mode 100644
index 0000000..83a9fa7
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/basictest.ll
@@ -0,0 +1,59 @@
+; Test CFG simplify removal of branch instructions.
+;
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+define void @test1() {
+        br label %BB1
+BB1:            ; preds = %0
+        ret void
+; CHECK: @test1
+; CHECK-NEXT: ret void
+}
+
+define void @test2() {
+        ret void
+BB1:            ; No predecessors!
+        ret void
+; CHECK: @test2
+; CHECK-NEXT: ret void
+; CHECK-NEXT: }
+}
+
+define void @test3(i1 %T) {
+        br i1 %T, label %BB1, label %BB1
+BB1:            ; preds = %0, %0
+        ret void
+; CHECK: @test3
+; CHECK-NEXT: ret void
+}
+
+
+define void @test4() {
+  br label %return
+return:
+  ret void
+; CHECK: @test4
+; CHECK-NEXT: ret void
+}
+@test4g = global i8* blockaddress(@test4, %return)
+
+
+; PR5795
+define void @test5(i32 %A) {
+  switch i32 %A, label %return [
+    i32 2, label %bb
+    i32 10, label %bb1
+  ]
+
+bb:                                               ; preds = %entry
+  ret void
+
+bb1:                                              ; preds = %entry
+  ret void
+
+return:                                           ; preds = %entry
+  ret void
+; CHECK: @test5
+; CHECK-NEXT: bb:
+; CHECK-NEXT: ret void
+}
diff --git a/test/Transforms/SimplifyCFG/branch-branch-dbginfo.ll b/test/Transforms/SimplifyCFG/branch-branch-dbginfo.ll
new file mode 100644
index 0000000..761f0d5
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-branch-dbginfo.ll
@@ -0,0 +1,70 @@
+; RUN: opt < %s -simplifycfg -S | grep {br i1} | count 1
+
+; ModuleID = '<stdin>'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
+target triple = "i386-pc-linux-gnu"
+	%llvm.dbg.anchor.type = type { i32, i32 }
+	%llvm.dbg.basictype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, i32 }
+	%llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8* }
+	%llvm.dbg.derivedtype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }* }
+	%llvm.dbg.subprogram.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1 }
+	%llvm.dbg.variable.type = type { i32, { }*, i8*, { }*, i32, { }* }
+@llvm.dbg.subprogram = internal constant %llvm.dbg.subprogram.type { i32 393262, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0), i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 4, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 false, i1 true }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { i32 393216, i32 46 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 393233, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([7 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([52 x i8]* @.str2, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 393216, i32 17 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str = internal constant [7 x i8] c"cond.c\00", section "llvm.metadata"		; <[7 x i8]*> [#uses=1]
+@.str1 = internal constant [5 x i8] c"/tmp\00", section "llvm.metadata"		; <[5 x i8]*> [#uses=1]
+@.str2 = internal constant [52 x i8] c"4.2.1 (Based on Apple Inc. build 5555) (LLVM build)\00", section "llvm.metadata"		; <[52 x i8]*> [#uses=1]
+@.str3 = internal constant [4 x i8] c"foo\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@llvm.dbg.basictype = internal constant %llvm.dbg.basictype.type { i32 393252, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str4, i32 0, i32 0), { }* null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5 }, section "llvm.metadata"		; <%llvm.dbg.basictype.type*> [#uses=1]
+@.str4 = internal constant [4 x i8] c"int\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@llvm.dbg.variable = internal constant %llvm.dbg.variable.type { i32 393473, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*), i8* getelementptr ([2 x i8]* @.str5, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 4, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=0]
+@.str5 = internal constant [2 x i8] c"x\00", section "llvm.metadata"		; <[2 x i8]*> [#uses=1]
+@llvm.dbg.variable6 = internal constant %llvm.dbg.variable.type { i32 393473, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*), i8* getelementptr ([2 x i8]* @.str7, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 4, { }* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype to { }*) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=0]
+@.str7 = internal constant [2 x i8] c"y\00", section "llvm.metadata"		; <[2 x i8]*> [#uses=1]
+@llvm.dbg.derivedtype = internal constant %llvm.dbg.derivedtype.type { i32 393238, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([6 x i8]* @.str8, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 1, i64 0, i64 0, i64 0, i32 0, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype9 to { }*) }, section "llvm.metadata"		; <%llvm.dbg.derivedtype.type*> [#uses=1]
+@.str8 = internal constant [6 x i8] c"uint1\00", section "llvm.metadata"		; <[6 x i8]*> [#uses=1]
+@llvm.dbg.basictype9 = internal constant %llvm.dbg.basictype.type { i32 393252, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* null, { }* null, i32 0, i64 8, i64 8, i64 0, i32 0, i32 7 }, section "llvm.metadata"		; <%llvm.dbg.basictype.type*> [#uses=1]
+
+define i32 @foo(i32 %x1, i1 zeroext %y2) nounwind {
+entry:
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp4 = icmp eq i32 %x1, 0		; <i1> [#uses=1]
+	br i1 %tmp4, label %bb, label %bb14
+
+bb:		; preds = %entry
+	call void @llvm.dbg.stoppoint(i32 6, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %y2, label %bb14, label %bb10
+
+bb7:		; preds = %bb
+	call void @llvm.dbg.stoppoint(i32 7, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp9 = call i32 @g1(i32 %x1) nounwind		; <i32> [#uses=1]
+	ret i32 %tmp9
+
+bb10:		; preds = %bb
+	call void @llvm.dbg.stoppoint(i32 8, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp12 = add i32 %x1, 1		; <i32> [#uses=1]
+	%tmp13 = call i32 @g2(i32 %tmp12) nounwind		; <i32> [#uses=1]
+	ret i32 %tmp13
+
+bb14:		; preds = %entry
+	call void @llvm.dbg.stoppoint(i32 10, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp16 = call i32 @g1(i32 %x1) nounwind		; <i32> [#uses=1]
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	ret i32 %tmp16
+}
+
+declare void @llvm.dbg.func.start({ }*) nounwind
+
+declare void @llvm.dbg.declare({ }*, { }*) nounwind
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+declare i32 @g1(i32)
+
+declare i32 @g2(i32)
+
+declare void @llvm.dbg.region.end({ }*) nounwind
diff --git a/test/Transforms/SimplifyCFG/branch-cond-merge.ll b/test/Transforms/SimplifyCFG/branch-cond-merge.ll
new file mode 100644
index 0000000..f73e01c
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-cond-merge.ll
@@ -0,0 +1,19 @@
+; RUN: opt < %s -simplifycfg -instcombine \
+; RUN:   -simplifycfg -S | not grep call
+
+declare void @bar()
+
+define void @test(i32 %X, i32 %Y) {
+entry:
+        %tmp.2 = icmp ne i32 %X, %Y             ; <i1> [#uses=1]
+        br i1 %tmp.2, label %shortcirc_next, label %UnifiedReturnBlock
+shortcirc_next:         ; preds = %entry
+        %tmp.3 = icmp ne i32 %X, %Y             ; <i1> [#uses=1]
+        br i1 %tmp.3, label %UnifiedReturnBlock, label %then
+then:           ; preds = %shortcirc_next
+        call void @bar( )
+        ret void
+UnifiedReturnBlock:             ; preds = %shortcirc_next, %entry
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/branch-cond-prop.ll b/test/Transforms/SimplifyCFG/branch-cond-prop.ll
new file mode 100644
index 0000000..448934e
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-cond-prop.ll
@@ -0,0 +1,17 @@
+; RUN: opt < %s -simplifycfg -S | not grep call
+
+declare void @bar()
+
+define void @test(i32 %X, i32 %Y) {
+entry:
+        %tmp.2 = icmp slt i32 %X, %Y            ; <i1> [#uses=2]
+        br i1 %tmp.2, label %shortcirc_next, label %UnifiedReturnBlock
+shortcirc_next:         ; preds = %entry
+        br i1 %tmp.2, label %UnifiedReturnBlock, label %then
+then:           ; preds = %shortcirc_next
+        call void @bar( )
+        ret void
+UnifiedReturnBlock:             ; preds = %shortcirc_next, %entry
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/branch-fold-test.ll b/test/Transforms/SimplifyCFG/branch-fold-test.ll
new file mode 100644
index 0000000..460f245
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-fold-test.ll
@@ -0,0 +1,17 @@
+; This test ensures that the simplifycfg pass continues to constant fold
+; terminator instructions.
+
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i32 @test(i32 %A, i32 %B) {
+J:
+        %C = add i32 %A, 12             ; <i32> [#uses=2]
+        br i1 true, label %L, label %K
+L:              ; preds = %J
+        %D = add i32 %C, %B             ; <i32> [#uses=1]
+        ret i32 %D
+K:              ; preds = %J
+        %E = add i32 %C, %B             ; <i32> [#uses=1]
+        ret i32 %E
+}
+
diff --git a/test/Transforms/SimplifyCFG/branch-fold.ll b/test/Transforms/SimplifyCFG/branch-fold.ll
new file mode 100644
index 0000000..266609b5
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-fold.ll
@@ -0,0 +1,13 @@
+; RUN: opt < %s -simplifycfg -S | grep {br i1} | count 1
+
+define void @test(i32* %P, i32* %Q, i1 %A, i1 %B) {
+        br i1 %A, label %a, label %b
+a:              ; preds = %0
+        br i1 %B, label %b, label %c
+b:              ; preds = %a, %0
+        store i32 123, i32* %P
+        ret void
+c:              ; preds = %a
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/branch-phi-thread.ll b/test/Transforms/SimplifyCFG/branch-phi-thread.ll
new file mode 100644
index 0000000..f52d979
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch-phi-thread.ll
@@ -0,0 +1,66 @@
+; RUN: opt < %s -simplifycfg -adce -S | \
+; RUN:   not grep {call void @f1}
+; END.
+
+declare void @f1()
+
+declare void @f2()
+
+declare void @f3()
+
+declare void @f4()
+
+define i32 @test1(i32 %X, i1 %D) {
+E:
+	%C = icmp eq i32 %X, 0		; <i1> [#uses=2]
+	br i1 %C, label %T, label %F
+T:		; preds = %A, %E
+	br i1 %C, label %B, label %A
+A:		; preds = %T
+	call void @f1( )
+	br i1 %D, label %T, label %F
+B:		; preds = %T
+	call void @f2( )
+	ret i32 345
+F:		; preds = %A, %E
+	call void @f3( )
+	ret i32 123
+}
+
+define i32 @test2(i32 %X, i1 %D) {
+E:
+	%C = icmp eq i32 %X, 0		; <i1> [#uses=2]
+	br i1 %C, label %T, label %F
+T:		; preds = %A, %E
+	%P = phi i1 [ true, %E ], [ %C, %A ]		; <i1> [#uses=1]
+	br i1 %P, label %B, label %A
+A:		; preds = %T
+	call void @f1( )
+	br i1 %D, label %T, label %F
+B:		; preds = %T
+	call void @f2( )
+	ret i32 345
+F:		; preds = %A, %E
+	call void @f3( )
+	ret i32 123
+}
+
+define i32 @test3(i32 %X, i1 %D, i32* %AP, i32* %BP) {
+E:
+	%C = icmp eq i32 %X, 0		; <i1> [#uses=2]
+	br i1 %C, label %T, label %F
+T:		; preds = %A, %E
+	call void @f3( )
+	%XX = load i32* %AP		; <i32> [#uses=1]
+	store i32 %XX, i32* %BP
+	br i1 %C, label %B, label %A
+A:		; preds = %T
+	call void @f1( )
+	br i1 %D, label %T, label %F
+B:		; preds = %T
+	call void @f2( )
+	ret i32 345
+F:		; preds = %A, %E
+	call void @f3( )
+	ret i32 123
+}
diff --git a/test/Transforms/SimplifyCFG/branch_fold_dbg.ll b/test/Transforms/SimplifyCFG/branch_fold_dbg.ll
new file mode 100644
index 0000000..6a500de
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/branch_fold_dbg.ll
@@ -0,0 +1,122 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+; END.
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+
+define void @main() {
+entry:
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.14.i19 = icmp eq i32 0, 2		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.14.i19, label %endif.1.i20, label %read_min.exit
+endif.1.i20:		; preds = %entry
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.9.i.i = icmp eq i8* null, null		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.9.i.i, label %then.i12.i, label %then.i.i
+then.i.i:		; preds = %endif.1.i20
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+then.i12.i:		; preds = %endif.1.i20
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.9.i4.i = icmp eq i8* null, null		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.9.i4.i, label %endif.2.i33, label %then.i5.i
+then.i5.i:		; preds = %then.i12.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+endif.2.i33:		; preds = %then.i12.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %loopexit.0.i40, label %no_exit.0.i35
+no_exit.0.i35:		; preds = %no_exit.0.i35, %endif.2.i33
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.130.i = icmp slt i32 0, 0		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.130.i, label %loopexit.0.i40.loopexit, label %no_exit.0.i35
+loopexit.0.i40.loopexit:		; preds = %no_exit.0.i35
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %loopexit.0.i40
+loopexit.0.i40:		; preds = %loopexit.0.i40.loopexit, %endif.2.i33
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.341.i = icmp eq i32 0, 0		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.341.i, label %loopentry.1.i, label %read_min.exit
+loopentry.1.i:		; preds = %loopexit.0.i40
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.347.i = icmp sgt i32 0, 0		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.347.i, label %no_exit.1.i41, label %loopexit.2.i44
+no_exit.1.i41:		; preds = %endif.5.i, %loopentry.1.i
+	%indvar.i42 = phi i32 [ %indvar.next.i, %endif.5.i ], [ 0, %loopentry.1.i ]		; <i32> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.355.i = icmp eq i32 0, 3		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.355.i, label %endif.5.i, label %read_min.exit
+endif.5.i:		; preds = %no_exit.1.i41
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.34773.i = icmp sgt i32 0, 0		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%indvar.next.i = add i32 %indvar.i42, 1		; <i32> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.34773.i, label %no_exit.1.i41, label %loopexit.1.i.loopexit
+loopexit.1.i.loopexit:		; preds = %endif.5.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+loopexit.2.i44:		; preds = %loopentry.1.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+read_min.exit:		; preds = %no_exit.1.i41, %loopexit.0.i40, %entry
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.23 = icmp eq i32 0, 0		; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 %tmp.23, label %endif.1, label %then.1
+then.1:		; preds = %read_min.exit
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %endif.0.i, label %then.0.i
+then.0.i:		; preds = %then.1
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %endif.1.i, label %then.1.i
+endif.0.i:		; preds = %then.1
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %endif.1.i, label %then.1.i
+then.1.i:		; preds = %endif.0.i, %then.0.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %getfree.exit, label %then.2.i
+endif.1.i:		; preds = %endif.0.i, %then.0.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %getfree.exit, label %then.2.i
+then.2.i:		; preds = %endif.1.i, %then.1.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+getfree.exit:		; preds = %endif.1.i, %then.1.i
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+endif.1:		; preds = %read_min.exit
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%tmp.27.i = getelementptr i32* null, i32 0		; <i32*> [#uses=0]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %loopexit.0.i15, label %no_exit.0.i14
+no_exit.0.i14:		; preds = %endif.1
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+loopexit.0.i15:		; preds = %endif.1
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %primal_start_artificial.exit, label %no_exit.1.i16
+no_exit.1.i16:		; preds = %no_exit.1.i16, %loopexit.0.i15
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br i1 false, label %primal_start_artificial.exit, label %no_exit.1.i16
+primal_start_artificial.exit:		; preds = %no_exit.1.i16, %loopexit.0.i15
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/dbginfo.ll b/test/Transforms/SimplifyCFG/dbginfo.ll
new file mode 100644
index 0000000..1a9f20a
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/dbginfo.ll
@@ -0,0 +1,71 @@
+; RUN: opt < %s -simplifycfg -S | not grep "br label"
+
+	%llvm.dbg.anchor.type = type { i32, i32 }
+	%llvm.dbg.basictype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, i32 }
+	%llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+	%llvm.dbg.composite.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }*, { }* }
+	%llvm.dbg.derivedtype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }* }
+	%llvm.dbg.global_variable.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1, { }* }
+	%llvm.dbg.subprogram.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1 }
+	%llvm.dbg.subrange.type = type { i32, i64, i64 }
+	%struct.Group = type { %struct.Scene, %struct.Sphere, %"struct.std::list<Scene*,std::allocator<Scene*> >" }
+	%struct.Ray = type { %struct.Vec, %struct.Vec }
+	%struct.Scene = type { i32 (...)** }
+	%struct.Sphere = type { %struct.Scene, %struct.Vec, double }
+	%struct.Vec = type { double, double, double }
+	%struct.__class_type_info_pseudo = type { %struct.__type_info_pseudo }
+	%struct.__false_type = type <{ i8 }>
+	%"struct.__gnu_cxx::new_allocator<Scene*>" = type <{ i8 }>
+	%"struct.__gnu_cxx::new_allocator<std::_List_node<Scene*> >" = type <{ i8 }>
+	%struct.__si_class_type_info_pseudo = type { %struct.__type_info_pseudo, %"struct.std::type_info"* }
+	%struct.__type_info_pseudo = type { i8*, i8* }
+	%"struct.std::Hit" = type { double, %struct.Vec }
+	%"struct.std::_List_base<Scene*,std::allocator<Scene*> >" = type { %"struct.std::_List_base<Scene*,std::allocator<Scene*> >::_List_impl" }
+	%"struct.std::_List_base<Scene*,std::allocator<Scene*> >::_List_impl" = type { %"struct.std::_List_node_base" }
+	%"struct.std::_List_const_iterator<Scene*>" = type { %"struct.std::_List_node_base"* }
+	%"struct.std::_List_iterator<Scene*>" = type { %"struct.std::_List_node_base"* }
+	%"struct.std::_List_node<Scene*>" = type { %"struct.std::_List_node_base", %struct.Scene* }
+	%"struct.std::_List_node_base" = type { %"struct.std::_List_node_base"*, %"struct.std::_List_node_base"* }
+	%"struct.std::allocator<Scene*>" = type <{ i8 }>
+	%"struct.std::allocator<std::_List_node<Scene*> >" = type <{ i8 }>
+	%"struct.std::basic_ios<char,std::char_traits<char> >" = type { %"struct.std::ios_base", %"struct.std::basic_ostream<char,std::char_traits<char> >"*, i8, i8, %"struct.std::basic_streambuf<char,std::char_traits<char> >"*, %"struct.std::ctype<char>"*, %"struct.std::num_get<char,std::istreambuf_iterator<char, std::char_traits<char> > >"*, %"struct.std::num_get<char,std::istreambuf_iterator<char, std::char_traits<char> > >"* }
+	%"struct.std::basic_ostream<char,std::char_traits<char> >" = type { i32 (...)**, %"struct.std::basic_ios<char,std::char_traits<char> >" }
+	%"struct.std::basic_streambuf<char,std::char_traits<char> >" = type { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, %"struct.std::locale" }
+	%"struct.std::ctype<char>" = type { %"struct.std::locale::facet", i32*, i8, i32*, i32*, i32*, i8, [256 x i8], [256 x i8], i8 }
+	%"struct.std::ios_base" = type { i32 (...)**, i32, i32, i32, i32, i32, %"struct.std::ios_base::_Callback_list"*, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, %"struct.std::ios_base::_Words"*, %"struct.std::locale" }
+	%"struct.std::ios_base::Init" = type <{ i8 }>
+	%"struct.std::ios_base::_Callback_list" = type { %"struct.std::ios_base::_Callback_list"*, void (i32, %"struct.std::ios_base"*, i32)*, i32, i32 }
+	%"struct.std::ios_base::_Words" = type { i8*, i32 }
+	%"struct.std::list<Scene*,std::allocator<Scene*> >" = type { %"struct.std::_List_base<Scene*,std::allocator<Scene*> >" }
+	%"struct.std::locale" = type { %"struct.std::locale::_Impl"* }
+	%"struct.std::locale::_Impl" = type { i32, %"struct.std::locale::facet"**, i32, %"struct.std::locale::facet"**, i8** }
+	%"struct.std::locale::facet" = type { i32 (...)**, i32 }
+	%"struct.std::num_get<char,std::istreambuf_iterator<char, std::char_traits<char> > >" = type { %"struct.std::locale::facet" }
+	%"struct.std::num_put<char,std::ostreambuf_iterator<char, std::char_traits<char> > >" = type { %"struct.std::locale::facet" }
+	%"struct.std::numeric_limits<double>" = type <{ i8 }>
+	%"struct.std::type_info" = type { i32 (...)**, i8* }
+@llvm.dbg.subprogram947 = external constant %llvm.dbg.subprogram.type		; <%llvm.dbg.subprogram.type*> [#uses=1]
+
+declare void @llvm.dbg.func.start({ }*) nounwind
+
+declare void @llvm.dbg.region.end({ }*) nounwind
+
+declare void @_ZN9__gnu_cxx13new_allocatorIP5SceneED2Ev(%struct.__false_type*) nounwind
+
+define void @_ZNSaIP5SceneED1Ev(%struct.__false_type* %this) nounwind {
+entry:
+	%this_addr = alloca %struct.__false_type*		; <%struct.__false_type**> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram947 to { }*))
+	store %struct.__false_type* %this, %struct.__false_type** %this_addr
+	%0 = load %struct.__false_type** %this_addr, align 4		; <%struct.__false_type*> [#uses=1]
+	call void @_ZN9__gnu_cxx13new_allocatorIP5SceneED2Ev(%struct.__false_type* %0) nounwind
+	br label %bb
+
+bb:		; preds = %entry
+	br label %return
+
+return:		; preds = %bb
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram947 to { }*))
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/dg.exp b/test/Transforms/SimplifyCFG/dg.exp
new file mode 100644
index 0000000..f200589
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/dg.exp
@@ -0,0 +1,3 @@
+load_lib llvm.exp
+
+RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,c,cpp}]]
diff --git a/test/Transforms/SimplifyCFG/duplicate-phis.ll b/test/Transforms/SimplifyCFG/duplicate-phis.ll
new file mode 100644
index 0000000..5129f9f
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/duplicate-phis.ll
@@ -0,0 +1,21 @@
+; RUN: opt < %s -instcombine -simplifycfg -S | grep { = phi } | count 1
+
+; instcombine should sort the PHI operands so that simplifycfg can see the
+; duplicate and remove it.
+
+define i32 @foo(i1 %t) {
+entry:
+  call void @bar()
+  br i1 %t, label %true, label %false
+true:
+  call void @bar()
+  br label %false
+false:
+  %a = phi i32 [ 2, %true ], [ 5, %entry ]
+  %b = phi i32 [ 5, %entry ], [ 2, %true ]
+  call void @bar()
+  %c = add i32 %a, %b
+  ret i32 %c
+}
+
+declare void @bar()
diff --git a/test/Transforms/SimplifyCFG/hoist-common-code.dbg.ll b/test/Transforms/SimplifyCFG/hoist-common-code.dbg.ll
new file mode 100644
index 0000000..6fbbb1b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/hoist-common-code.dbg.ll
@@ -0,0 +1,33 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+declare void @bar(i32)
+
+define void @test(i1 %P, i32* %Q) {
+        br i1 %P, label %T, label %F
+T:              ; preds = %0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        store i32 1, i32* %Q
+        %A = load i32* %Q               ; <i32> [#uses=1]
+        call void @bar( i32 %A )
+        ret void
+F:              ; preds = %0
+        store i32 1, i32* %Q
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %B = load i32* %Q               ; <i32> [#uses=1]
+        call void @bar( i32 %B )
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/hoist-common-code.ll b/test/Transforms/SimplifyCFG/hoist-common-code.ll
new file mode 100644
index 0000000..5c83e2a
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/hoist-common-code.ll
@@ -0,0 +1,18 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+declare void @bar(i32)
+
+define void @test(i1 %P, i32* %Q) {
+        br i1 %P, label %T, label %F
+T:              ; preds = %0
+        store i32 1, i32* %Q
+        %A = load i32* %Q               ; <i32> [#uses=1]
+        call void @bar( i32 %A )
+        ret void
+F:              ; preds = %0
+        store i32 1, i32* %Q
+        %B = load i32* %Q               ; <i32> [#uses=1]
+        call void @bar( i32 %B )
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/invoke_unwind.ll b/test/Transforms/SimplifyCFG/invoke_unwind.ll
new file mode 100644
index 0000000..bbd779b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/invoke_unwind.ll
@@ -0,0 +1,33 @@
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+declare void @bar()
+
+; This testcase checks to see if the simplifycfg pass is converting invoke
+; instructions to call instructions if the handler just rethrows the exception.
+define i32 @test1() {
+; CHECK: @test1
+; CHECK-NEXT: call void @bar()
+; CHECK-NEXT: ret i32 0
+        invoke void @bar( )
+                        to label %Ok unwind label %Rethrow
+Ok:             ; preds = %0
+        ret i32 0
+Rethrow:                ; preds = %0
+        unwind
+}
+
+
+; Verify that simplifycfg isn't duplicating 'unwind' instructions.  Doing this
+; is bad because it discourages commoning.
+define i32 @test2(i1 %c) {
+; CHECK: @test2
+; CHECK: T:
+; CHECK-NEXT: call void @bar()
+; CHECK-NEXT: br label %F
+  br i1 %c, label %T, label %F
+T:
+  call void @bar()
+  br label %F
+F:
+  unwind
+}
diff --git a/test/Transforms/SimplifyCFG/iterative-simplify.ll b/test/Transforms/SimplifyCFG/iterative-simplify.ll
new file mode 100644
index 0000000..a397411
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/iterative-simplify.ll
@@ -0,0 +1,100 @@
+; RUN: opt < %s -simplifycfg -S | not grep bb17
+; PR1786
+
+define i32 @main() {
+entry:
+	%retval = alloca i32, align 4		; <i32*> [#uses=1]
+	%i = alloca i32, align 4		; <i32*> [#uses=7]
+	%z = alloca i32, align 4		; <i32*> [#uses=4]
+	%z16 = alloca i32, align 4		; <i32*> [#uses=4]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	store i32 0, i32* %i
+	%toBool = icmp ne i8 1, 0		; <i1> [#uses=1]
+	br i1 %toBool, label %cond_true, label %cond_false
+
+cond_true:		; preds = %entry
+	store i32 0, i32* %z
+	br label %bb
+
+bb:		; preds = %cond_next, %cond_true
+	%tmp = load i32* %z		; <i32> [#uses=1]
+	%tmp1 = sub i32 %tmp, 16384		; <i32> [#uses=1]
+	store i32 %tmp1, i32* %z
+	%tmp2 = load i32* %i		; <i32> [#uses=1]
+	%tmp3 = add i32 %tmp2, 1		; <i32> [#uses=1]
+	store i32 %tmp3, i32* %i
+	%tmp4 = load i32* %i		; <i32> [#uses=1]
+	%tmp5 = icmp sgt i32 %tmp4, 262144		; <i1> [#uses=1]
+	%tmp56 = zext i1 %tmp5 to i8		; <i8> [#uses=1]
+	%toBool7 = icmp ne i8 %tmp56, 0		; <i1> [#uses=1]
+	br i1 %toBool7, label %cond_true8, label %cond_next
+
+cond_true8:		; preds = %bb
+	call void @abort( )
+	unreachable
+
+cond_next:		; preds = %bb
+	%tmp9 = load i32* %z		; <i32> [#uses=1]
+	%tmp10 = icmp ne i32 %tmp9, 0		; <i1> [#uses=1]
+	%tmp1011 = zext i1 %tmp10 to i8		; <i8> [#uses=1]
+	%toBool12 = icmp ne i8 %tmp1011, 0		; <i1> [#uses=1]
+	br i1 %toBool12, label %bb, label %bb13
+
+bb13:		; preds = %cond_next
+	call void @exit( i32 0 )
+	unreachable
+
+cond_false:		; preds = %entry
+	%toBool14 = icmp ne i8 1, 0		; <i1> [#uses=1]
+	br i1 %toBool14, label %cond_true15, label %cond_false33
+
+cond_true15:		; preds = %cond_false
+	store i32 0, i32* %z16
+	br label %bb17
+
+bb17:		; preds = %cond_next27, %cond_true15
+	%tmp18 = load i32* %z16		; <i32> [#uses=1]
+	%tmp19 = sub i32 %tmp18, 16384		; <i32> [#uses=1]
+	store i32 %tmp19, i32* %z16
+	%tmp20 = load i32* %i		; <i32> [#uses=1]
+	%tmp21 = add i32 %tmp20, 1		; <i32> [#uses=1]
+	store i32 %tmp21, i32* %i
+	%tmp22 = load i32* %i		; <i32> [#uses=1]
+	%tmp23 = icmp sgt i32 %tmp22, 262144		; <i1> [#uses=1]
+	%tmp2324 = zext i1 %tmp23 to i8		; <i8> [#uses=1]
+	%toBool25 = icmp ne i8 %tmp2324, 0		; <i1> [#uses=1]
+	br i1 %toBool25, label %cond_true26, label %cond_next27
+
+cond_true26:		; preds = %bb17
+	call void @abort( )
+	unreachable
+
+cond_next27:		; preds = %bb17
+	%tmp28 = load i32* %z16		; <i32> [#uses=1]
+	%tmp29 = icmp ne i32 %tmp28, 0		; <i1> [#uses=1]
+	%tmp2930 = zext i1 %tmp29 to i8		; <i8> [#uses=1]
+	%toBool31 = icmp ne i8 %tmp2930, 0		; <i1> [#uses=1]
+	br i1 %toBool31, label %bb17, label %bb32
+
+bb32:		; preds = %cond_next27
+	call void @exit( i32 0 )
+	unreachable
+
+cond_false33:		; preds = %cond_false
+	call void @exit( i32 0 )
+	unreachable
+
+cond_next34:		; No predecessors!
+	br label %cond_next35
+
+cond_next35:		; preds = %cond_next34
+	br label %return
+
+return:		; preds = %cond_next35
+	%retval36 = load i32* %retval		; <i32> [#uses=1]
+	ret i32 %retval36
+}
+
+declare void @abort()
+
+declare void @exit(i32)
diff --git a/test/Transforms/SimplifyCFG/noreturn-call.ll b/test/Transforms/SimplifyCFG/noreturn-call.ll
new file mode 100644
index 0000000..b454778
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/noreturn-call.ll
@@ -0,0 +1,11 @@
+; RUN: opt < %s -simplifycfg -S | grep unreachable
+; PR1796
+
+declare void @Finisher(i32) noreturn
+
+define void @YYY(i32) {
+  tail call void @Finisher(i32 %0) noreturn
+  tail call void @Finisher(i32 %0) noreturn
+  ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/return-merge.ll b/test/Transforms/SimplifyCFG/return-merge.ll
new file mode 100644
index 0000000..977b6df
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/return-merge.ll
@@ -0,0 +1,19 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i32 @test1(i1 %C) {
+entry:
+        br i1 %C, label %T, label %F
+T:              ; preds = %entry
+        ret i32 1
+F:              ; preds = %entry
+        ret i32 0
+}
+
+define void @test2(i1 %C) {
+        br i1 %C, label %T, label %F
+T:              ; preds = %0
+        ret void
+F:              ; preds = %0
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/switch-simplify-crash.ll b/test/Transforms/SimplifyCFG/switch-simplify-crash.ll
new file mode 100644
index 0000000..bbc0bd7
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch-simplify-crash.ll
@@ -0,0 +1,108 @@
+; RUN: opt < %s -simplifycfg -disable-output
+
+define void @NewExtractNames() {
+entry:
+	br i1 false, label %endif.0, label %then.0
+then.0:		; preds = %entry
+	br i1 false, label %shortcirc_next.i, label %shortcirc_done.i
+shortcirc_next.i:		; preds = %then.0
+	br label %shortcirc_done.i
+shortcirc_done.i:		; preds = %shortcirc_next.i, %then.0
+	br i1 false, label %then.0.i, label %else.0.i
+then.0.i:		; preds = %shortcirc_done.i
+	br label %NewBase.exit
+else.0.i:		; preds = %shortcirc_done.i
+	br i1 false, label %endif.0.i, label %else.1.i
+else.1.i:		; preds = %else.0.i
+	br i1 false, label %endif.0.i, label %else.2.i
+else.2.i:		; preds = %else.1.i
+	br label %NewBase.exit
+endif.0.i:		; preds = %else.1.i, %else.0.i
+	br label %NewBase.exit
+NewBase.exit:		; preds = %endif.0.i, %else.2.i, %then.0.i
+	br label %endif.0
+endif.0:		; preds = %NewBase.exit, %entry
+	%tmp.32.mask = and i32 0, 31		; <i32> [#uses=1]
+	switch i32 %tmp.32.mask, label %label.9 [
+		 i32 16, label %loopentry.2
+		 i32 15, label %loopentry.2
+		 i32 14, label %loopentry.2
+		 i32 13, label %loopentry.2
+		 i32 10, label %loopentry.2
+		 i32 20, label %loopentry.1
+		 i32 19, label %loopentry.1
+		 i32 2, label %loopentry.0
+		 i32 0, label %switchexit
+	]
+loopentry.0:		; preds = %endif.1, %endif.0
+	br i1 false, label %no_exit.0, label %switchexit
+no_exit.0:		; preds = %loopentry.0
+	br i1 false, label %then.1, label %else.1
+then.1:		; preds = %no_exit.0
+	br label %endif.1
+else.1:		; preds = %no_exit.0
+	br i1 false, label %shortcirc_next.0, label %shortcirc_done.0
+shortcirc_next.0:		; preds = %else.1
+	br label %shortcirc_done.0
+shortcirc_done.0:		; preds = %shortcirc_next.0, %else.1
+	br i1 false, label %then.2, label %endif.2
+then.2:		; preds = %shortcirc_done.0
+	br label %endif.2
+endif.2:		; preds = %then.2, %shortcirc_done.0
+	br label %endif.1
+endif.1:		; preds = %endif.2, %then.1
+	br label %loopentry.0
+loopentry.1:		; preds = %endif.3, %endif.0, %endif.0
+	br i1 false, label %no_exit.1, label %switchexit
+no_exit.1:		; preds = %loopentry.1
+	br i1 false, label %then.3, label %else.2
+then.3:		; preds = %no_exit.1
+	br label %endif.3
+else.2:		; preds = %no_exit.1
+	br i1 false, label %shortcirc_next.1, label %shortcirc_done.1
+shortcirc_next.1:		; preds = %else.2
+	br label %shortcirc_done.1
+shortcirc_done.1:		; preds = %shortcirc_next.1, %else.2
+	br i1 false, label %then.4, label %endif.4
+then.4:		; preds = %shortcirc_done.1
+	br label %endif.4
+endif.4:		; preds = %then.4, %shortcirc_done.1
+	br label %endif.3
+endif.3:		; preds = %endif.4, %then.3
+	br label %loopentry.1
+loopentry.2:		; preds = %endif.5, %endif.0, %endif.0, %endif.0, %endif.0, %endif.0
+	%i.3 = phi i32 [ 0, %endif.5 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ]		; <i32> [#uses=1]
+	%tmp.158 = icmp slt i32 %i.3, 0		; <i1> [#uses=1]
+	br i1 %tmp.158, label %no_exit.2, label %switchexit
+no_exit.2:		; preds = %loopentry.2
+	br i1 false, label %shortcirc_next.2, label %shortcirc_done.2
+shortcirc_next.2:		; preds = %no_exit.2
+	br label %shortcirc_done.2
+shortcirc_done.2:		; preds = %shortcirc_next.2, %no_exit.2
+	br i1 false, label %then.5, label %endif.5
+then.5:		; preds = %shortcirc_done.2
+	br label %endif.5
+endif.5:		; preds = %then.5, %shortcirc_done.2
+	br label %loopentry.2
+label.9:		; preds = %endif.0
+	br i1 false, label %then.6, label %endif.6
+then.6:		; preds = %label.9
+	br label %endif.6
+endif.6:		; preds = %then.6, %label.9
+	store i32 0, i32* null
+	br label %switchexit
+switchexit:		; preds = %endif.6, %loopentry.2, %loopentry.1, %loopentry.0, %endif.0
+	br i1 false, label %endif.7, label %then.7
+then.7:		; preds = %switchexit
+	br i1 false, label %shortcirc_next.3, label %shortcirc_done.3
+shortcirc_next.3:		; preds = %then.7
+	br label %shortcirc_done.3
+shortcirc_done.3:		; preds = %shortcirc_next.3, %then.7
+	br i1 false, label %then.8, label %endif.8
+then.8:		; preds = %shortcirc_done.3
+	br label %endif.8
+endif.8:		; preds = %then.8, %shortcirc_done.3
+	br label %endif.7
+endif.7:		; preds = %endif.8, %switchexit
+	ret void
+}
diff --git a/test/Transforms/SimplifyCFG/switch_create.ll b/test/Transforms/SimplifyCFG/switch_create.ll
new file mode 100644
index 0000000..9b3aaf7
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_create.ll
@@ -0,0 +1,47 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+declare void @foo1()
+
+declare void @foo2()
+
+define void @test1(i32 %V) {
+        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+        br i1 %CN, label %T, label %F
+T:              ; preds = %0
+        call void @foo1( )
+        ret void
+F:              ; preds = %0
+        call void @foo2( )
+        ret void
+}
+
+define void @test2(i32 %V) {
+        %C1 = icmp ne i32 %V, 4         ; <i1> [#uses=1]
+        %C2 = icmp ne i32 %V, 17                ; <i1> [#uses=1]
+        %CN = and i1 %C1, %C2           ; <i1> [#uses=1]
+        br i1 %CN, label %T, label %F
+T:              ; preds = %0
+        call void @foo1( )
+        ret void
+F:              ; preds = %0
+        call void @foo2( )
+        ret void
+}
+
+define void @test3(i32 %V) {
+        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+        br i1 %C1, label %T, label %N
+N:              ; preds = %0
+        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+        br i1 %C2, label %T, label %F
+T:              ; preds = %N, %0
+        call void @foo1( )
+        ret void
+F:              ; preds = %N
+        call void @foo2( )
+        ret void
+}
+
+
diff --git a/test/Transforms/SimplifyCFG/switch_formation.dbg.ll b/test/Transforms/SimplifyCFG/switch_formation.dbg.ll
new file mode 100644
index 0000000..f1c820e
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_formation.dbg.ll
@@ -0,0 +1,48 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+define i1 @_ZN4llvm11SetCondInst7classofEPKNS_11InstructionE({ i32, i32 }* %I) {
+entry:
+        %tmp.1.i = getelementptr { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
+        %tmp.2.i = load i32* %tmp.1.i           ; <i32> [#uses=6]
+        %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
+        br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
+shortcirc_next.0:               ; preds = %entry
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
+        br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
+shortcirc_next.1:               ; preds = %shortcirc_next.0
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
+        br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
+shortcirc_next.2:               ; preds = %shortcirc_next.1
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
+        br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
+shortcirc_next.3:               ; preds = %shortcirc_next.2
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
+        br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
+shortcirc_next.4:               ; preds = %shortcirc_next.3
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
+        br label %UnifiedReturnBlock
+shortcirc_done.4:               ; preds = %shortcirc_next.3, %shortcirc_next.2, %shortcirc_next.1, %shortcirc_next.0, %entry
+        br label %UnifiedReturnBlock
+UnifiedReturnBlock:             ; preds = %shortcirc_done.4, %shortcirc_next.4
+        %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
+        ret i1 %UnifiedRetVal
+}
+
diff --git a/test/Transforms/SimplifyCFG/switch_formation.ll b/test/Transforms/SimplifyCFG/switch_formation.ll
new file mode 100644
index 0000000..787904a
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_formation.ll
@@ -0,0 +1,30 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i1 @_ZN4llvm11SetCondInst7classofEPKNS_11InstructionE({ i32, i32 }* %I) {
+entry:
+        %tmp.1.i = getelementptr { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
+        %tmp.2.i = load i32* %tmp.1.i           ; <i32> [#uses=6]
+        %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
+        br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
+shortcirc_next.0:               ; preds = %entry
+        %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
+        br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
+shortcirc_next.1:               ; preds = %shortcirc_next.0
+        %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
+        br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
+shortcirc_next.2:               ; preds = %shortcirc_next.1
+        %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
+        br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
+shortcirc_next.3:               ; preds = %shortcirc_next.2
+        %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
+        br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
+shortcirc_next.4:               ; preds = %shortcirc_next.3
+        %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
+        br label %UnifiedReturnBlock
+shortcirc_done.4:               ; preds = %shortcirc_next.3, %shortcirc_next.2, %shortcirc_next.1, %shortcirc_next.0, %entry
+        br label %UnifiedReturnBlock
+UnifiedReturnBlock:             ; preds = %shortcirc_done.4, %shortcirc_next.4
+        %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
+        ret i1 %UnifiedRetVal
+}
+
diff --git a/test/Transforms/SimplifyCFG/switch_switch_fold.ll b/test/Transforms/SimplifyCFG/switch_switch_fold.ll
new file mode 100644
index 0000000..2e2e310
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_switch_fold.ll
@@ -0,0 +1,47 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   grep switch | count 1
+
+; Test that a switch going to a switch on the same value can be merged.   All 
+; three switches in this example can be merged into one big one.
+
+declare void @foo1()
+
+declare void @foo2()
+
+declare void @foo3()
+
+declare void @foo4()
+
+define void @test1(i32 %V) {
+        switch i32 %V, label %F [
+                 i32 4, label %T
+                 i32 17, label %T
+                 i32 5, label %T
+                 i32 1234, label %F
+        ]
+T:              ; preds = %0, %0, %0
+        switch i32 %V, label %F [
+                 i32 4, label %A
+                 i32 17, label %B
+                 i32 42, label %C
+        ]
+A:              ; preds = %T
+        call void @foo1( )
+        ret void
+B:              ; preds = %F, %F, %T
+        call void @foo2( )
+        ret void
+C:              ; preds = %T
+        call void @foo3( )
+        ret void
+F:              ; preds = %F, %T, %0, %0
+        switch i32 %V, label %F [
+                 i32 4, label %B
+                 i32 18, label %B
+                 i32 42, label %D
+        ]
+D:              ; preds = %F
+        call void @foo4( )
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/switch_switch_fold_dbginfo.ll b/test/Transforms/SimplifyCFG/switch_switch_fold_dbginfo.ll
new file mode 100644
index 0000000..7d7391a
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_switch_fold_dbginfo.ll
@@ -0,0 +1,116 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   grep switch | count 1
+
+; ModuleID = '<stdin>'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
+target triple = "i386-pc-linux-gnu"
+	%llvm.dbg.anchor.type = type { i32, i32 }
+	%llvm.dbg.basictype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, i32 }
+	%llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8*, i32 }
+	%llvm.dbg.composite.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }*, { }*, i32 }
+	%llvm.dbg.subprogram.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1 }
+	%llvm.dbg.variable.type = type { i32, { }*, i8*, { }*, i32, { }* }
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str = internal constant [10 x i8] c"swithh2.c\00", section "llvm.metadata"		; <[10 x i8]*> [#uses=1]
+@.str1 = internal constant [38 x i8] c"/developer/home2/zsth/test/debug/tmp/\00", section "llvm.metadata"		; <[38 x i8]*> [#uses=1]
+@.str2 = internal constant [52 x i8] c"4.2.1 (Based on Apple Inc. build 5641) (LLVM build)\00", section "llvm.metadata"		; <[52 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([10 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([38 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([52 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null, i32 -1 }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+@.str3 = internal constant [4 x i8] c"int\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@llvm.dbg.basictype = internal constant %llvm.dbg.basictype.type { i32 458788, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 32, i64 32, i64 0, i32 0, i32 5 }, section "llvm.metadata"		; <%llvm.dbg.basictype.type*> [#uses=1]
+@llvm.dbg.array = internal constant [2 x { }*] [{ }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*)], section "llvm.metadata"		; <[2 x { }*]*> [#uses=1]
+@llvm.dbg.composite = internal constant %llvm.dbg.composite.type { i32 458773, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 0, i64 0, i64 0, i32 0, { }* null, { }* bitcast ([2 x { }*]* @llvm.dbg.array to { }*), i32 0 }, section "llvm.metadata"		; <%llvm.dbg.composite.type*> [#uses=1]
+@llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 46 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str4 = internal constant [4 x i8] c"foo\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@llvm.dbg.subprogram = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str4, i32 0, i32 0), i8* getelementptr ([4 x i8]* @.str4, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 1, { }* bitcast (%llvm.dbg.composite.type* @llvm.dbg.composite to { }*), i1 false, i1 true }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@.str5 = internal constant [2 x i8] c"x\00", section "llvm.metadata"		; <[2 x i8]*> [#uses=1]
+@llvm.dbg.variable = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*), i8* getelementptr ([2 x i8]* @.str5, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 1, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=0]
+
+define i32 @foo(i32 %x) nounwind {
+entry:
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	call void @llvm.dbg.stoppoint(i32 2, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	switch i32 %x, label %bb4 [
+		i32 1, label %bb
+		i32 2, label %bb1
+		i32 3, label %bb2
+		i32 4, label %bb3
+	]
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 2, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb
+
+bb:		; preds = %0, %entry
+	call void @llvm.dbg.stoppoint(i32 3, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 3, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb1
+
+bb1:		; preds = %1, %entry
+	call void @llvm.dbg.stoppoint(i32 4, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 4, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb2
+
+bb2:		; preds = %2, %entry
+	call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb3
+
+bb3:		; preds = %3, %entry
+	call void @llvm.dbg.stoppoint(i32 6, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 6, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb4
+
+bb4:		; preds = %4, %entry
+	call void @llvm.dbg.stoppoint(i32 10, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	switch i32 %x, label %bb7 [
+		i32 5, label %bb5
+		i32 6, label %bb6
+	]
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 10, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb5
+
+bb5:		; preds = %5, %bb4
+	call void @llvm.dbg.stoppoint(i32 11, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 11, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb6
+
+bb6:		; preds = %6, %bb4
+	call void @llvm.dbg.stoppoint(i32 12, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 12, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb7
+
+bb7:		; preds = %7, %bb4
+	call void @llvm.dbg.stoppoint(i32 13, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+
+bb8:		; preds = %bb7, %bb6, %bb5, %bb3, %bb2, %bb1, %bb
+	%.0 = phi i32 [ 4, %bb3 ], [ 3, %bb2 ], [ 2, %bb1 ], [ 1, %bb ], [ 6, %bb6 ], [ 5, %bb5 ], [ 0, %bb7 ]		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 13, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %return
+
+return:		; preds = %bb8
+	call void @llvm.dbg.stoppoint(i32 13, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	ret i32 %.0
+}
+
+declare void @llvm.dbg.func.start({ }*) nounwind
+
+declare void @llvm.dbg.declare({ }*, { }*) nounwind
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+declare void @llvm.dbg.region.end({ }*) nounwind
diff --git a/test/Transforms/SimplifyCFG/switch_thread.ll b/test/Transforms/SimplifyCFG/switch_thread.ll
new file mode 100644
index 0000000..bd85fcc
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/switch_thread.ll
@@ -0,0 +1,79 @@
+; RUN: opt < %s -simplifycfg -S | \
+; RUN:   not grep {call void @DEAD}
+
+; Test that we can thread a simple known condition through switch statements.
+
+declare void @foo1()
+
+declare void @foo2()
+
+declare void @DEAD()
+
+define void @test1(i32 %V) {
+        switch i32 %V, label %A [
+                 i32 4, label %T
+                 i32 17, label %Done
+                 i32 1234, label %A
+        ]
+;; V == 4 if we get here.
+T:              ; preds = %0
+        call void @foo1( )
+        ;; This switch is always statically determined.
+        switch i32 %V, label %A2 [
+                 i32 4, label %B
+                 i32 17, label %C
+                 i32 42, label %C
+        ]
+A2:             ; preds = %T
+        call void @DEAD( )
+        call void @DEAD( )
+        ;; always true
+        %cond2 = icmp eq i32 %V, 4              ; <i1> [#uses=1]
+        br i1 %cond2, label %Done, label %C
+A:              ; preds = %0, %0
+        call void @foo1( )
+        ;; always true
+        %cond = icmp ne i32 %V, 4               ; <i1> [#uses=1]
+        br i1 %cond, label %Done, label %C
+Done:           ; preds = %B, %A, %A2, %0
+        ret void
+B:              ; preds = %T
+        call void @foo2( )
+        ;; always true
+        %cond3 = icmp eq i32 %V, 4              ; <i1> [#uses=1]
+        br i1 %cond3, label %Done, label %C
+C:              ; preds = %B, %A, %A2, %T, %T
+        call void @DEAD( )
+        ret void
+}
+
+define void @test2(i32 %V) {
+        switch i32 %V, label %A [
+                 i32 4, label %T
+                 i32 17, label %D
+                 i32 1234, label %E
+        ]
+;; V != 4, 17, 1234 here.
+A:              ; preds = %0
+        call void @foo1( )
+        ;; This switch is always statically determined.
+        switch i32 %V, label %E [
+                 i32 4, label %C
+                 i32 17, label %C
+                 i32 42, label %D
+        ]
+;; unreacahble.
+C:              ; preds = %A, %A
+        call void @DEAD( )
+        ret void
+T:              ; preds = %0
+        call void @foo1( )
+        call void @foo1( )
+        ret void
+D:              ; preds = %A, %0
+        call void @foo1( )
+        ret void
+E:              ; preds = %A, %0
+        ret void
+}
+
diff --git a/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll
new file mode 100644
index 0000000..0c9cc8b
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll
@@ -0,0 +1,19 @@
+; RUN: opt < %s -simplifycfg -S | grep {volatile load}
+; PR2967
+
+target datalayout =
+"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32"
+target triple = "i386-pc-linux-gnu"
+
+define void @foo(i32 %x) nounwind {
+entry:
+        %0 = icmp eq i32 %x, 0          ; <i1> [#uses=1]
+        br i1 %0, label %bb, label %return
+
+bb:             ; preds = %entry
+        %1 = volatile load i32* null            ; <i32> [#uses=0]
+        unreachable
+        br label %return
+return:         ; preds = %entry
+        ret void
+}
diff --git a/test/Transforms/SimplifyCFG/two-entry-phi-return.dbg.ll b/test/Transforms/SimplifyCFG/two-entry-phi-return.dbg.ll
new file mode 100644
index 0000000..01041eb
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/two-entry-phi-return.dbg.ll
@@ -0,0 +1,28 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"	; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"		; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+define i1 @qux(i8* %m, i8* %n, i8* %o, i8* %p) nounwind  {
+entry:
+        %tmp7 = icmp eq i8* %m, %n
+        br i1 %tmp7, label %bb, label %UnifiedReturnBlock
+
+bb:
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+        %tmp15 = icmp eq i8* %o, %p
+        br label %UnifiedReturnBlock
+
+UnifiedReturnBlock:
+        %result = phi i1 [ 0, %entry ], [ %tmp15, %bb ]
+        ret i1 %result
+}
diff --git a/test/Transforms/SimplifyCFG/two-entry-phi-return.ll b/test/Transforms/SimplifyCFG/two-entry-phi-return.ll
new file mode 100644
index 0000000..fb18624
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/two-entry-phi-return.ll
@@ -0,0 +1,15 @@
+; RUN: opt < %s -simplifycfg -S | not grep br
+
+define i1 @qux(i8* %m, i8* %n, i8* %o, i8* %p) nounwind  {
+entry:
+        %tmp7 = icmp eq i8* %m, %n
+        br i1 %tmp7, label %bb, label %UnifiedReturnBlock
+
+bb:
+        %tmp15 = icmp eq i8* %o, %p
+        br label %UnifiedReturnBlock
+
+UnifiedReturnBlock:
+        %result = phi i1 [ 0, %entry ], [ %tmp15, %bb ]
+        ret i1 %result
+}